Dell 8K3MP ReadyRails static rails support 1U rack servers in two-post and four-post racks. Compatible with part numbers 8K3MP and 770-BBGY, these fixed mounting rails provide secure installation without tools for standard EIA-310-E-compliant square- or unthreaded-round-hole racks. Designed for systems that do not require sliding capabilities, they offer a sturdy solution where direct access to the server is sufficient. Constructed from durable materials, these static rails ensure proper alignment within data center configurations while maintaining consistent weight distribution across the rack structure. Dell 8K3MP: ReadyRails 770-BBGY Static Rails for 2/4 Post Racks. Compatible with the following Dell Networking switches: N3048 N3024F N2048 N3024ET-ON N3024EF-ON N2048P N2024 N4064F S4048-ON S4148U S4128 N3048P N4064 N3048ET-ON X1026 N3200-ON X1018 N4032F N3024 Z9100 S4048T-ON X1052 EMC Networking N2200-ON N3024P N2024P N4032 S4148 S4248FB-ON