You need two full-width PCIe Gen4 cards in your SR650 V2 or SR665 and the stock riser won't cut it. This Option Kit v2 slots into Riser positions 1/2 and hands you two dedicated x16 lanes with one empty slot for airflow. No bandwidth sharing. No lane splitting. Just two clean Gen4 paths for your GPUs or high-speed NICs. Genuine LENOVO ISG part 4XH7A61081
| 0 | ThinkSystem SR650 V2 |
| 1 | ThinkSystem SR665 |
| brand | LENOVO ISG |
| part_number | 4XH7A61081 |
| category | SERVERS |
| subcategory | LENOVO RISER CARDS |
| pcie_generation | Gen4 |
| lane_configuration | x16/x16/E |
| riser_position | 1/2 |
| kit_version | v2 |