Cisco 19-inch Rack-Mount Kit for 1100 Series ISR (C111x / C1111X)
1RU · 19-inchCisco 1100 Series ISRC111x and C1111X onlyPSU space in bracket
The Cisco ACS-1100-RM-19= is the official 19-inch rack-mount kit for the Cisco 1100 Series Integrated Services Routers of the C111x and C1111X families, letting you move a desktop branch router into a standard rack or network cabinet at a height of one rack unit.
The Cisco 1100 routers ship as desktop units without rack ears. This kit adds left and right brackets that attach to the sides of the chassis, and Cisco designed the bracket with room inside for the router's external power supply, so the power brick does not hang loose behind the rack. It is meant for IT teams and integrators who standardise branch offices and want the router, switch and patch panel in the same cabinet.
Before you order: This kit is for the C111x and C1111X models only. The larger C1121 and C1161 routers use a different kit (ACS-1100-RM2-19=), and the C1101 and C1109 have no rack-mount option at all — check the exact model on your router's label before ordering.
What's in the Box
- Rack-mount brackets for the left and right side of the router
- Screws for fixing the brackets to the router chassis
- The router itself, its power supply and cage nuts for the rack are not included
What It Means in Practice
- Your Cisco 1100 router sits in 1RU of a 19-inch rack instead of on a shelf or the cabinet floor.
- The external power supply is held in the bracket, so the cabling at the back stays tidy and the brick cannot fall behind other equipment.
- Cisco recommends keeping about 4.4 cm (1.75 in) of free space around the router's vents — avoid packing hot equipment tight above and below it.
- Installation is mechanical only: no configuration, firmware or licence change on the router.
What Will Not Work
- Cisco C1121 and C1161 (C1120/C1160 families) — they need ACS-1100-RM2-19=.
- Cisco C1101 and C1109 — Cisco offers desktop, wall and (C1109) ceiling mounting only, no rack kit.
- Cisco 900 Series, 4000 or 8000 Series routers — each has its own mounting kit.
- Racks without 19-inch mounting rails, or a cabinet with no free 1RU.
Key Features
Official Cisco spare
The kit Cisco lists in its 1100 Series ordering information, so the brackets match the chassis holes exactly.
Room for the PSU
The bracket includes space for the router's external power supply, keeping the installation self-contained.
1RU footprint
The router occupies a single rack unit, leaving room for switches and patch panels.
Technical Specifications
| Identification |
| Part Number |
ACS-1100-RM-19= |
| EAN / GTIN |
0889728099264 |
| Brand |
Cisco |
| Mechanical |
| Type |
19-inch rack-mount kit |
| Rack height |
1RU |
| Compatible routers |
Cisco 1100 Series ISR — C111x and C1111X models |
| Power supply |
Space inside the bracket for the router's external power supply |
| Clearance |
About 4.4 cm (1.75 in) around the vents recommended by Cisco |
| Warranty |
| Warranty |
1-Year Warranty (Singular) |
| Manufacturer Term |
Cisco does not publish a separate warranty term for this accessory — claims handled through Singular |
Frequently Asked Questions
Does the Cisco 1100 router come with rack ears?
No. The C111x routers ship as desktop units; you need this kit to install them in a 19-inch rack.
I have a C1121 or C1161 — is this the right kit?
No. Those routers use ACS-1100-RM2-19=. Send us the model and we will quote the right one.
Can I install it in a 2-post rack?
The brackets fix at the front of the router, so a 2-post or 4-post rack with standard 19-inch rails works; just make sure the rear cabling has room.
Singular Expert Insight · Buyer's Guide
Most mistakes with this kit come from the 1100 family being large: C111x, C1121, C1161 and C1101 look similar but use different mounting options. Match the first digits of your router model to the kit before you order. Browse our other
rack accessories for shelves and cable management to complete the cabinet.
✓ Buy it if you run a Cisco C111x or C1111X branch router and want it in a 19-inch rack with the power supply secured.
✕ Skip it if your router is a C1121, C1161, C1101 or C1109, or you are fine keeping it on a rack shelf.
→ Also consider a 1U fixed rack shelf if you need to mount a mixed set of desktop devices.
Not sure which 1100 model you have? Send us the model from the router label and we will confirm the right kit before you order.