You're trying to fit two full-length accelerators into an SR630 V2 or SR645 and the stock riser won't give you both slots as x16. This Riser1 LP+LP option kit delivers two x16 PCIe Gen 4 slots, so your GPUs or SmartNICs run at full bandwidth without a lane-share compromise. Lenovo ISG part. Drop it in, seat both cards, done
| brand | LENOVO ISG |
| category | Servers |
| subcategory | Lenovo Riser Cards |
| slot_configuration | x16/x16 |
| pcie_generation | Gen 4 |
| riser_type | Riser1 LP+LP Option Kit |
| compatible_servers | ThinkSystem SR630 V2, ThinkSystem SR645 |