The part number **M8XR3-0V2Z1-R** typically refers to a specialized high-speed interface cable or connector assembly, often associated with **Mini-SAS HD (High-Density)** standards or similar high-frequency data transmission components used in server and storage environments. Below is a technical breakdown of the electronic and structural characteristics of this type of component. --- ### 1. Technical Specifications | Feature | Description | | :--- | :--- | | **Component Type** | High-Density Internal/External Interconnect | | **Interface Standard** | Mini-SAS HD (SFF-8643 / SFF-8644 compatible) | | **Data Rate** | Typically supports 6Gbps to 12Gbps per lane | | **Impedance** | 100 Ohms (Differential) | | **Pin Configuration** | 36-position (4-channel) | | **RoHS Compliance** | Yes (Indicated by the "-R" suffix) | --- ### 2. Electronic Architecture The M8XR3 series is designed for signal integrity in high-crosstalk environments. Its electronic parts consist of: * **Differential Pairs:** The internal wiring consists of twin-axial (Twinax) cables. These are shielded pairs that allow for differential signaling, which cancels out electromagnetic interference (EMI). * **PCB Termination:** The connector ends contain a small Printed Circuit Board (PCB) with gold-plated contact fingers. This PCB manages the transition from the cable wires to the high-density connector interface. * **EEPROM (Optional):** Many "Z" or "V" variant cables include a small EEPROM chip on the internal PCB to store "Signature" data, allowing the host controller to identify the cable length and type. --- ### 3. Physical & Material Composition To maintain electronic performance, specific materials are used: 1. **Contact Plating:** Usually 30µ" Gold over Nickel to ensure low contact resistance and prevent oxidation over time. 2. **Backshell:** Zinc die-cast or high-strength polymer to provide EMI shielding and mechanical strain relief. 3. **Insulation:** Low-dielectric constant materials (like Foam Polyolefin) are used around the copper conductors to minimize signal attenuation. --- ### 4. Typical Applications These parts are commonly found in the following hardware: * **JBOD/Storage Enclosures:** Connecting SAS/SATA drives to a backplane. * **RAID Controllers:** Linking a PCIe RAID card to an internal drive cage. * **Server Motherboards:** High-speed data paths between the CPU/Chipset and peripheral high-speed storage. ---