3560-X/3750-X Series 19" (1RU) Rack Mount Kit Compatible With Cisco / C3KX-RACK-KIT-19 Compatible with: WS-C3560X-24T-L, WS-C3560X-48T-L, WS-C3560X-24P-L, WS-C3560X-48P-L, WS-C3560X-48P-L, WS-C3560X-48PF-L, WS-C3560X-24T-S, WS-C3560X-48T-S, WS-C3560X-24P-S, WS-C3560X-48P-S, WS-C3560X-48PF-S, WS-C3750X-24T-L, WS-C3750X-48T-L, WS-C3750X-24P-L, WS-C3750X-48P-L, WS-C3750X-48PF-L, WS-C3750X-24T-S, WS-C3750X-48T-S, WS-C3750X-24P-S, WS-C3750X-48P-S, WS-C3750X-48PF-S, WS-C3750X-12S-S, WS-C3750X-24S-S, WS-C3750X-12S-E, WS-C3750X-24S-E.