The **PER-R16P** is a high-performance, industrial-grade **PCI Express (PCIe) expansion riser card** or interface module, typically manufactured by companies like IEI Integration Corp. It is designed to extend the connectivity of industrial motherboards or embedded systems. --- ### 1. Core Technical Specifications The "R16P" designation usually refers to its PCIe lane configuration and physical form factor. | Feature | Specification | | :--- | :--- | | **Interface Type** | PCI Express (PCIe) | | **Lane Configuration** | Typically x16 physical slot (supports x16 or x8 electrical) | | **Form Factor** | Riser Card / Expansion Module | | **Power Input** | Derived from the PCIe slot or external 12V DC header | | **Operating Temp** | -20°C to +60°C (Industrial Grade) | --- ### 2. Key Electronic Components The board consists of several critical sub-systems to ensure data integrity and power stability: #### A. Signal Re-drivers / Switches Because high-speed PCIe signals degrade over distance, these cards often feature: * **Differential Pair Routing:** Precisely matched impedance traces to prevent signal skew. * **Pericom/Diodes Inc. ICs:** Often used to switch or boost the PCIe clock and data signals. #### B. Power Management Circuitry To protect the peripheral device (like a GPU or FPGA), the board includes: * **MLCC Capacitors:** Multi-layer ceramic capacitors for high-frequency noise filtering. * **Solid Capacitors:** Used for bulk decoupling to provide stable voltage during high-load transients. * **Voltage Regulators:** To ensure the +3.3V and +12V rails remain within ATX specifications. #### C. Connectivity & Mechanicals * **Gold Fingers:** 15μ" or 30μ" gold plating on the contact points to prevent oxidation in humid industrial environments. * **PCIe Slot:** High-retention force slot to prevent the expansion card from vibrating loose. --- ### 3. Primary Applications The PER-R16P is rarely found in consumer PCs; it is intended for: 1. **Industrial PCs (IPC):** Adding high-end graphics cards or AI accelerators to compact rackmount servers. 2. **Machine Vision:** Connecting high-speed frame grabbers for factory automation. 3. **Edge AI:** Hosting NVIDIA Tesla or Jetson modules in ruggedized enclosures where the motherboard layout doesn't allow direct plugging. --- ### 4. Implementation Example When integrating this part into a system, the pinout follows the standard PCIe CEM specification: ```markdown Pin Side A (Component) | Pin Side B (Solder) -----------------------|-------------------- A1: Hot Plug Detect | B1: +12V Power A2: +12V Power | B2: +12V Power A3: +12V Power | B3: +12V Power A11: PERST# (Reset) | B8: Display Data Channel ```