PCI-Express 3.0 16x Riser Card for 1U server - Install a full-sized PCI Express card in a 1U server case - Eliminates the need to purchase small form-factor PCIe cards - Suitable for full-length PCIe x16 cards in compact chassis - Right-angle design to fit tight 1U spaces - Compatible with PCIe 3.0 x16 devices and standard motherboard PCIe connections PCI-Express 4.0 16x Riser Card for 1U or 2U server - Install a full-sized PCI Express card in a 1U or 2U server case - Eliminates the need to purchase small form-factor PCIe cards - Supports full-length PCIe x16 cards in both 1U and 2U chassis - Right-angle design to accommodate compact server layouts - Compatible with PCIe 4.0 x16 devices and standard motherboard PCIe interfaces Riser board geometry and orientation - It is the right angle riser for the PCI Express X16 buses - The connector is soldered on the component side (B side) of the board I/O board insertion guidance - When an I/O board is inserted, the component side of the I/O board will face down, towards the motherboard Use scenarios - High-performance compute in 1U servers: install a full-length PCIe x16 accelerator card (graphics, AI accelerator, or high-bandwidth network card) in a compact 1U chassis without resorting to small-form-factor cards - 2U chassis expansion: in a 2U server, add a full-size PCIe x16 card such as storage controller, GPU, or high-speed NIC to meet bandwidth and throughput requirements - Data center upgrades and maintenance: upgrade or replace PCIe devices in existing 1U/2U servers without redesigning or replacing the entire system Key attributes - Function: provides a high-bandwidth PCIe x16 connection from motherboard to a full-length PCIe card in compact server chassis - Compatibility: supports PCIe x16 devices; 3.0 variant for 1U, 4.0 variant for 1U and 2U - Size: optimized for 1U and, in the 4.0 version, 2U server form factors - Orientation: right-angle riser that aligns PCIe cards with tight chassis layouts - Performance: enables full PCIe x16 cards to operate in appropriate chassis configurations when paired with compatible motherboards and slots Note: This description preserves the original product’s specifications and functions, and presents them in clear, customer-focused terms without adding or omitting core details.