ThinkSystem tower server rail options
A variety of rail kits and cable management arm (CMA) are available for use with ThinkSystem tower servers.
To learn what rail kits and CMA are compatible with a server, please refer to:
- [Lenovo Server Proven](https://serverproven.lenovo.com/)
- [ThinkSystem and ThinkEdge Rail Kit Reference](https://lenovopress.lenovo.com/lp1838-thinksystem-and-thinkedge-rail-kit-reference)
| Rail option | Supported models |
|---|---|
| ThinkSystem L Shaped Rail Kit | ST650 V2 ST650 V3 |
| ThinkSystem ST50/ST250 Rack Mount Kit | ST50 ST250 |
| ThinkSystem ST50/ST250 Series Rack Mount Kit | ST50 V2 ST50 V3 ST250 V2 ST250 V3 |
| ThinkSystem ST550 4U Tower to Rack Conversion Kit | ST550 |
| ThinkSystem ST550 CMA Kit | ST550 |
| ThinkSystem ST650 V2/V3 Tower to Rack Conversion Kit | ST650 V2 ST650 V3 |