770-BCKV: Dell 1U Cable Management Arm (CMA) for ReadyRails II
Also listed as: 07P8W6, 7P8W6
The Dell 770-BCKV is a Dell 1U Cable Management Arm (CMA) for ReadyRails II providing tool-less rack mounting and maintenance sliding access for Dell PowerEdge R640, R650, R660, R440 servers.
Specifications
| Part number | 770-BCKV |
|---|---|
| Brand | Dell |
| Type | Rail kits |
| Other numbers | 07P8W6, 7P8W6 |
| Status | current |
| Form factor | 1U Articulated Cable Management Arm |
| Cable capacity | Supports redundant power, management, and high-speed network cabling |
| Attachment type | Tool-less snap-in latching to 1U ReadyRails II assemblies |
| Reversible | Configurable for left-hand or right-hand swing mounting |
About the 770-BCKV
The Dell 770-BCKV is a Dell 1U Cable Management Arm (CMA) for ReadyRails II engineered to mount Dell PowerEdge servers into standard 19-inch equipment racks. Built with heavy-gauge steel ball-bearing sliding mechanisms or static brackets, the 770-BCKV provides tool-less installation into square-hole or unthreaded round-hole four-post server racks.
Compatibility
Designed for Dell PowerEdge R640, R650, R660, R440 servers, the 770-BCKV accommodates standard rack depths and integrates with optional cable management arms. The 770-BCKV supports square-hole and round-hole racks using Dell ReadyRails mounting brackets, and can adapt to threaded four-post racks with optional adapter kits.
How to identify a genuine unit
Genuine Dell 770-BCKV rail assemblies carry stamped part numbers including DP/N 07P8W6, Left/Right rail indicators (L/R), and rack depth adjustment markings. Quick-release blue latch buttons on the 770-BCKV facilitate tool-free installation and removal from equipment rack posts.
Buying used
When purchasing pre-owned 770-BCKV rails, inspect the inner and outer sliding tracks to ensure ball bearings glide smoothly without binding or missing ball cages. Verify that both front and rear spring-loaded latch pins on the 770-BCKV engage securely, and confirm that both left and right rail assemblies are included.
Fits these models
Equivalent part numbers
- Dell 7P8W6 Dell direct spare part number for 1U Cable Management Arm
FAQ
Does this 1U CMA work with static rails?
No, Cable Management Arms require sliding rails to function, as static rails do not extend outward.
Does this support thick twinax or DAC cables?
Yes, the channel provides sufficient bend radius for standard copper DAC and fiber optic patch leads.
Buying or selling 770-BCKV?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- Dell 1U Cable Management Arm Specifications, checked 2026-10-27