GEN11 SERVER COMPATIBILITY: Supports Proliant DL380, DL385, DL345, DL560, and DL380a Gen11 server models ADJUSTABLE MOUNTING DEPTH: Fits 4-post racks with depths from 12 to 34 inches; center-mounts in 2-post racks with 3 to 6 inch depths UNIVERSAL RACK SUPPORT: Compatible with threaded, round, and square rack holes; fits L, C, and similar upright shapes EASY SERVER ACCESS: Dry slide rails allow smooth sliding for quick server access and servicing DURABLE BUILD QUALITY: Constructed for long-lasting use without the wear issues of ball-bearing designs