StarTech.com CMHOOK1UN — 1U Vertical D-Ring Cable Management Hook, 4.5 × 10 cm
1UD-ring 4.5 × 10 cmSteel19" & 10" racks
The StarTech.com CMHOOK1UN is a 1U vertical cable management D-ring hook, 4.5 × 10 cm (1.8 × 3.9 in), made of black steel, for routing cable bundles up and down the side rails of 2-post and 4-post 19-inch and 10-inch racks.
Horizontal cable managers keep cords tidy across the rack; D-rings do the same job vertically. Mounted on the side of the rail, a column of hooks holds the bundles that run between units, so patch cords do not hang across the front of equipment. The wide front opening lets you lay cables in and lift them out without threading them through, and several hooks can be combined along the rail.
Before you order: Each pack contains one hook and StarTech.com does not list screws or cage nuts in the box. Order one hook per unit you want to use and have mounting hardware ready.
What's in the Box
- 1 × StarTech.com CMHOOK1UN 1U cable management D-ring hook, 4.5 × 10 cm (1.8 × 3.9 in)
What It Means in Practice
- One hook takes one unit on the rail; a column of four to six hooks is typical for a patch panel and switch area.
- Internal opening 38.6 × 92.6 mm holds a sizeable bundle of patch cords.
- The open front means cables are laid in, not threaded through, which makes moves and changes quick.
- Fits both 2-post open frames and 4-post racks and cabinets, in 19-inch and 10-inch widths.
What Will Not Work
- Horizontal cable routing across the rack front: use a 1U horizontal cable management panel for that.
- Mounting without hardware: screws and cage nuts are not included in the box.
- Bundles larger than the 38.6 × 92.6 mm internal opening: choose the wider StarTech.com CMHOOK1U (5.7 × 10 cm).
Key Features
Vertical cable management
Keeps bundles on the side of the rack and away from equipment fronts.
Open-front D-ring
Lay cables in and lift them out without disconnecting them.
Steel construction
Black steel ring for a durable, rack-matching finish.
19" and 10" racks
Works on 2-post and 4-post racks in both widths.
Technical Specifications
| Identification |
| Manufacturer |
StarTech.com |
| Part Number |
CMHOOK1UN |
| UPC |
065030852876 |
| Product Type |
1U vertical server rack cable management D-ring hook |
| Rack Fit |
| Rack Types |
2-post and 4-post, 19" and 10" |
| Height |
1U |
| Orientation |
Vertical |
| Physical |
| D-Ring Size |
4.5 × 10 cm (1.8 × 3.9 in) |
| Internal Opening |
38.6 × 92.6 mm |
| Dimensions |
101 × 45 × 44.6 mm |
| Material |
Steel |
| Colour |
Black |
| Weight |
70 g |
| Package Quantity |
1 |
| Warranty |
| Warranty |
1-Year Warranty (Singular) |
| Manufacturer Term |
2-year manufacturer warranty per StarTech.com — claims handled through Singular |
Frequently Asked Questions
Is this a single hook or a pack?
A single hook. Order as many as the units you want to cover.
Are screws included?
StarTech.com lists only the hook in the package. Use rack screws and cage nuts that match your rack.
Can I combine several hooks?
Yes. Hooks mount one per unit and can be lined up along the rail to form a vertical cable path.
Singular Expert Insight · Buyer's Guide
Vertical D-rings are what keep a busy rack serviceable: the bundles run down the side, the fronts stay clear and any cord can be lifted out. Plan one hook per unit along the cable path and add screws and cage nuts. For horizontal managers and panels see our
rack accessories range.
✓ Buy it if you want to route cable bundles vertically along the side rails of a 19-inch or 10-inch rack.
✕ Skip it if you need horizontal cable management across the rack, or a multi-hook pack.
→ Also consider the wider StarTech.com CMHOOK1U (5.7 × 10 cm), or a 1U horizontal cable management panel for patch cords between devices.
Planning the cabling of a rack? Tell us the rack model and cable count and we will suggest how many hooks you need.