Desktop Computer Motherboard Memory Slot 2x DDR4 DIMM Memory RAM Test Diagnosis Adapter With LED Indicators Long Latch Test Card.
Product specifications:
1. Applicable Scene: Desktop computer DDR4 memory test card is suitable for desktop computer DDR4 memory.
2. Computer Memory Failures: The failures of computer memory are mainly due to poor contact of the gold pins, wear and tear of the gold pins, broken PCBs, damage to the data line exclusion, open and short circuits in the video memory, and poor memory performance, etc.
3. LED Indicators: LED indicators are used to test all data lines of the memory, and the normal brightness is regarded as normal. When a hardware fault occurs in the loop of these data lines, bright or no light is abnormal.
4.Uses: If the test indicator flashes, it means that the gold pin is in poor contact. If there is no indicator light, it means that the hardware has an open circuit failure. Check the wear of the gold pin, whether the exclusion is damaged, and whether the PCB is disconnected.
5.Easy To Use: Insert the CR2032 battery into the battery holder of the test card, or connect the type C cable , and then insert the memory card to test.
Product Overview:
This product is a specially designed tester for desktop DDR4 memory module testing needs, with significant features of precision, efficiency, and convenience. It is equipped with two slots that meet the specifications of desktop DDR4 memory modules, and provides two flexible and diverse power supply modes: TYPE-C data cable power supply and 3.6V button battery power supply. Combined with an independent testing switch and an LED indicator system that corresponds one-to-one with the gold finger pins of the memory module, whether it is a computer repair technician, computer hardware DIY enthusiast, or computer hardware manufacturer's quality inspection process, it can quickly and accurately troubleshoot various faults of desktop DDR4 memory modules, ensuring the stable operation of the memory module and even the entire computer system.
| DDR4 memory slots typically contain 288 pins, divided into a main pin group and an auxiliary pin group |
| Power Pin | VDD | The main power supply voltage pin, typically 1.2V ± 0.060V, is used to power the core logic circuit of DDR4 memory. |
| VDDQ | The data signal power supply voltage pin, also 1.2V ± 0.060V, is specifically used for supplying power to data signal lines to reduce signal interference. |
| VPP | The DRAM activation voltage pin, typically ranging from 2.5V to 0.125V/+0.250V, is used to provide additional voltage support during read and write operations in DRAM. |
| VREFCA | The reference voltage pin is used to control, command, and address the reference voltage of the lines, ensuring that these signals maintain a stable voltage level during transmission. |
| Ground pin | Examples such as VSS, VSSQ, and VSSR are used to convert signals into reliable digital signals, avoiding interference and errors. They are respectively connected to the system's ground plane to provide a stable grounding reference. |
| Control signal pin | CS_n | Chip selection signal pin, used to select the DDR4 memory chip currently being operated on. |
| ACT_n | Activate command input pin, when low, it indicates that the DDR4 memory chip is in an active state and can accept read and write commands. |
| RAS_n/A16,CAS_n/A15,WE_n/A14 | When CT_n is at a low level, it serves as the row address input pin; When ACT_n is at a high level, it serves as a command input pin, corresponding to the row select (RAS), column select (CAS), and write enable (WE) signals, respectively. |
| ALERT_n | The alarm signal output pin is used to send an alarm signal to the system memory controller when the DDR4 memory chip detects an error or specific event. |
| RESET_n | When the reset signal pin is low, the DDR4 memory chip will perform a reset operation. |
| Clock signal pin | The differential clock signal (CK_t/CK-c) is used, provided by the DDR controller, to provide a timing reference for DDR4 memory operations, ensuring synchronization between the DDR4 memory chip and the system clock. |
| Address signal pin | A(17:0) | Row and column address signal pins, used to specify row and column addresses in DDR4 memory, some pins can be functionally reused. |
| BA(1:0) | Bank address line pin, used to specify the bank address in DDR4 memory. |
| BG(1:0) | Bank group address line pin, used to specify the Bank group address in DDR4 memory. |
| Data signal pin | It usually contains multiple sets of data signal pins, each set having data input/output pins (DQ) and data mask pins (DM). For example, DQ (0:15) represents a 16 bit data line, UDQS_t/UDQS_c and LDQS_t/LDQS_c represent two sets of differential data gating signals, corresponding to the data transmission of DQ (15:8) and DQ (7:0), respectively. UDM-n/LDMn is the data mask pin associated with DQ (15:8) and DQ (7:0), used to control the mask operation of data transmission. |
Product features:
Dual slot design, efficient detection: equipped with two desktop DDR4 memory module slots, greatly improving the efficiency of product use. The slots are designed and manufactured strictly in accordance with the DDR4 memory module standard specifications. The internal gold finger contact points are made of high-quality conductive alloy material, which has been finely gold-plated to have extremely low contact resistance and excellent oxidation resistance, ensuring that the memory module can be tightly and stably connected after insertion, and accurately adapting to the electrical characteristics of DDR4 memory modules, laying a solid foundation for precise detection,
Flexible power supply, adaptable to diverse scenarios: Innovatively providing two ways of power supply: TYPE-C data cable power supply and 3.6V button battery power supply, fully meeting the power needs of different usage scenarios. The TYPE-C power supply method has strong universality and can easily connect various power devices such as computer USB ports, mobile phone chargers, and portable power banks, providing sufficient power guarantee for long-term, high-intensity testing operations in indoor environments with stable power supply; The 3.6V button battery power supply highlights its portability advantage. In outdoor mobile maintenance and emergency situations without external power sockets, it can still ensure the normal operation of the tester. Users only need to toggle the power selection switch to the corresponding position according to the actual situation to easily switch the power supply mode, and the operation is simple and convenient.
Intuitive and visual, precise fault location: Each carefully arranged LED bead on the tester corresponds precisely to each foot position of the memory module's golden finger, creating an extremely intuitive visual fault diagnosis system. After starting the test, users can instantly obtain the health status information of the memory module by observing the status of the LED beads. If the LED light bulb flashes, it clearly indicates that there is a poor contact problem with the memory module's gold fingers, which may be caused by oxidation of the gold fingers, dust or foreign objects in the slot, etc; If the LED light bead does not light up, it indicates that there may be a hardware open circuit fault, such as severe wear of the gold finger contact, PCB circuit board breakage, etc. It helps users quickly identify the fault point without complex professional knowledge, and can preliminarily determine the fault type with naked eye observation, greatly improving the speed and accuracy of fault diagnosis.
Independent switch, convenient control experience: equipped with an independent test switch, its design fully considers ergonomic principles, comfortable operation feel, moderate pressing stroke, and sensitive feedback. After the memory module is correctly inserted and the power supply is ready, the user only needs to gently press the test switch, and the tester will immediately start the detection process. The entire operation process is simple and clear, without the need for complicated setup steps. Whether it is professional maintenance personnel or beginners who are new to hardware detection, they can quickly get started and easily control it, greatly improving the convenience of use.
Product Structure and Interface Introduction:
DDR4 memory module slot: Both slots are designed strictly according to the physical dimensions and electrical specifications of desktop DDR4 memory modules. The contact area of the gold finger inside the slot adopts a special dovetail groove structure design, which not only effectively fixes the memory module to prevent it from loosening or displacement during testing, but also ensures that the gold finger is tightly adhered to the contact point in all directions, achieving reliable electrical connection. The slot is equipped with sturdy and durable buckle devices around it. Through clever mechanical structure design, when the memory module is inserted into place, the buckle can automatically lock, ensuring that the memory module is stable in the slot and convenient for users to disassemble, providing convenience and reliability guarantee for frequent memory module insertion and extraction testing operations.
Power supply interface and switch:
TYPE-C interface: Designed in accordance with the universal TYPE-C standard specifications, its internal pin layout is precise and error free, using high-quality metal materials to create contact points with excellent conductivity and signal transmission capabilities. The interface shell is made of metal material and grounded to effectively block external electromagnetic interference, ensuring power supply stability and data transmission integrity. At the same time, in order to adapt to different types of TYPE-C power cables, the external dimensional tolerance of the interface is controlled within a very small range, making it easy for users to connect various external power devices such as computers, mobile phone chargers, etc., providing stable and continuous power input for the tester.
3.6V button battery holder: The design is compact and reasonable, fully considering the installation convenience and stability of button batteries. The battery holder uses highly elastic metal spring plates as electrode contacts inside, which can ensure a tight fit of the button battery after installation, prevent loosening and poor contact, and facilitate users to quickly replace the battery. The shell of the battery holder is made of insulating material, effectively preventing safety hazards such as battery short circuits, and providing reliable protection for using button batteries for power supply in mobile scenarios.
Power selection switch: Select high-quality toggle switches with clear gear sense and crisp operating feel. Through precise internal circuit connections, the switching between TYPE-C power supply and button battery power supply modes can be accurately controlled, ensuring that only the selected power supply method is connected to the circuit, avoiding power conflicts, and ensuring the safe and stable operation of the tester. The external identification of the switch is clear and easy for users to intuitively know the current power supply level, making it convenient to operate.
LED bead array: composed of multiple high brightness, low-power LED beads arranged according to specific rules, corresponding one-to-one with the foot positions of the memory module's gold fingers. The lamp bead, through carefully designed internal circuit connections, can convert the electrical status of the memory module pins into visual light signals in real time and accurately. The lamp beads are made of long-lasting and highly stable packaging materials, ensuring reliable illumination during long-term and frequent testing processes, providing users with continuous and accurate detection indicators, and helping users quickly determine the fault status of the memory module.
Independent test switch *: Designed with a micro switch, it has fast response characteristics and can trigger the testing instrument to start the detection program at the moment of pressing. The outer shell of the switch is made of insulating material to prevent accidental short circuits. The internal contacts are gold-plated to ensure conductivity and reliability after multiple presses, ensuring smooth start-up of the testing process. At the same time, the installation position of the switch is reasonable, making it easy for users to operate. Whether operated with one or both hands, the switch can be easily pressed to start the test.
Independent testing switch: Designed with a micro switch, it has fast response characteristics and can trigger the testing instrument to start the detection program at the moment of pressing. The outer shell of the switch is made of insulating material to prevent accidental short circuits. The internal contacts are gold-plated to ensure conductivity and reliability after multiple presses, ensuring smooth start-up of the testing process. At the same time, the installation position of the switch is reasonable, making it easy for users to operate. Whether operated with one or both hands, the switch can be easily pressed to start the test.
Performance advantages:
Accurate fault diagnosis: With the LED indicator system that accurately corresponds to the gold finger foot position of the memory module, it is possible to quickly locate the faulty part of the memory module with extremely high accuracy. Whether it is slight oxidation and wear of the golden finger caused by daily use, or hidden faults such as PCB circuit breakage caused by accidental collision, aging, etc., they can be exposed in the first time through intuitive light bead status, providing clear direction for subsequent maintenance and component replacement, greatly shortening the fault investigation time, improving maintenance efficiency, and effectively reducing maintenance costs.
Wide range of scenario adaptation: The dual guarantee of TYPE-C data cable power supply and 3.6V button battery power supply ensures that it is not limited to usage scenarios. Whether in computer repair shops equipped with complete power sockets, hardware laboratories, or temporary office spaces without external power supply for outdoor repairs, users can flexibly choose the power supply method according to the actual situation, ensuring that the tester is available at any time, enhancing the practicality and adaptability of the product in different environments, and meeting the needs of various user groups.
Efficient Batch Testing: The design of two desktop DDR4 memory module slots enables simultaneous testing of two memory modules in batch testing scenarios, such as quality inspection by computer hardware manufacturers or when dealing with a large number of computers sent for repair by computer repair shops. Compared to single slot testers, the testing efficiency is greatly improved, effectively saving time and costs, improving work efficiency, and providing strong support for large-scale memory module testing operations.
Convenient operation experience: From inserting the memory module, selecting the power supply, to starting the test, the entire operation process is simple and clear. The independent test switch and intuitive LED light feedback allow users to quickly complete the inspection without complex professional knowledge and cumbersome settings, reducing the threshold for use. It is especially suitable for novice computer maintenance and scenarios that require frequent inspection of memory modules, such as daily order acceptance inspection in computer repair shops, greatly improving work efficiency.
Usage:
Choose power supply method: Based on the environment and actual needs, if you are indoors and close to devices such as computers and power sockets, prioritize the TYPE-C data cable power supply method. Connect one end of the TYPE-C power cord to the TYPE-C interface of the tester, and the other end to a suitable power device, such as the USB interface of a computer or the TYPE-C output port of a mobile phone charger. Then turn the power selection switch to the TYPE-C power mode; If in an emergency situation where there is no external power source in outdoor mobile scenes, use a 3.6V button battery for power supply. Open the battery holder cover, place the button battery in the correct positive and negative directions into the battery holder, ensure that the battery is installed firmly, and then turn the power selection switch to the button battery power supply position.
Insert memory module: Gently open the DDR4 memory module slot buckle on the tester, align the gold finger of the desktop DDR4 memory module to be tested with the slot, and insert slowly and steadily, paying attention to the correct insertion direction to avoid forcefully inserting and damaging the gold finger. Until the memory module is fully inserted and the buckle automatically tightens, ensure that the memory module is tightly connected to the slot to ensure the accuracy of the test results. To test two memory modules simultaneously, repeat this step and insert the other memory module into another slot.
Start test: After inserting the memory module and preparing the power supply, press the independent test switch, and the tester will immediately start the detection process. At this time, pay close attention to the illumination of the LED bead array. Under normal circumstances, all LED chips corresponding to the normal pins of the memory module should light up steadily; If a flashing light bead is found, it indicates that there is a poor contact problem with the corresponding memory module's gold finger. Further inspection is needed to check whether the gold finger is oxidized and whether there are dust or foreign objects in the slot; If a certain LED bead does not light up, it indicates that there may be a hardware open circuit fault, such as severe wear of the gold finger contacts, PCB board breakage, etc. Further disassembly and inspection of the memory module is required.
Result judgment and subsequent processing: According to the LED indicator, if all the pins corresponding to the memory module are lit up normally, it indicates that the basic function of the memory module is normal; If there are abnormal situations such as flashing or not lighting up of the LED, record the corresponding pin number of the abnormal LED, and based on the known DDR4 memory module circuit principle and common fault causes, preliminarily determine the fault type, such as poor contact, open circuit fault, etc. For poor contact faults, you can try using an eraser to gently wipe the gold fingers of the memory module, remove the oxide layer, and then reinsert for testing; For open circuit faults, it is necessary to further inspect the wear of the gold finger contacts, check for damage, and check if the PCB is disconnected. If necessary, replace the memory module.
Applicable scenarios:
Daily operation and maintenance of computer repair shops: In computer repair shops, faced with a large number of desktop computers sent for repair, repair personnel need to quickly determine whether the memory module is faulty. This tester, with its fast and accurate detection capabilities, can test DDR4 memory modules of different brands and models of desktop computers in a short period of time. Through intuitive LED indicators, it can quickly locate faults, whether it is gold finger oxidation caused by aging or overheating, or PCB damage caused by accidental collisions, it can efficiently detect and greatly improve the efficiency of repair shop order processing, reducing customer waiting time.
Computer hardware manufacturer quality inspection: On the computer hardware production line, strict quality testing is required after the memory module assembly process to ensure the reliable performance of each memory module produced from the factory. The dual power supply mode and dual slot design of this tester enable it to seamlessly integrate into the production line, meeting the large-scale and high-efficiency quality inspection needs. Through automated or semi automated operations, defective memory modules can be quickly screened to ensure product quality and enhance brand reputation.
Computer DIY enthusiasts self check: DIY enthusiasts often worry about compatibility or quality issues when upgrading or replacing desktop memory modules on their own. By using this tester, they can easily check whether the memory module is working properly at home. Whether it is upgrading the memory module of an old computer or trying out a newly purchased memory module, problems can be detected in a timely manner through simple operations, avoiding the trouble of the computer not starting properly due to memory module failures and improving the DIY experience.
Package contents:
1 x DDR4 Memory Tester.
1x Type C cable.
4x PCB Spacer.
