About the EX9204-CHAS3-S
The EX9204 is the 4-slot model in Juniper’s EX9200 family of modular core switches for campus and data-center networks. This part number is the spare chassis only: the 5U enclosure with its passive midplane. It is used to replace a damaged chassis or to build a system from separately ordered parts.
For a complete system, order the EX9204-BASE3C-AC (one EX9200-RE2 routing engine, one EX9200-SF3 switch fabric module and two 2520 W AC power supplies) or the EX9204-RED3C-AC (two routing engines, two SF3 modules and four 2520 W AC power supplies).
What’s included
- EX9204 chassis with passive midplane (5U, 4 slots)
Sold separately
- Routing engines and switch fabric modules
- Power supplies
- Line cards, optics and cables
Choosing a version
- EX9204-CHAS3-S (this page): spare chassis only
- EX9204-BASE3C-AC: complete base system, AC power
- EX9204-RED3C-AC: complete redundant system, AC power
Larger EX9200 spare chassis: EX9208-CHAS3-S and EX9214-CHAS3-S.
Not sure which version you need? Call (984) 225-1600 or request a quote and we’ll check it against your rack and network.
EX9204-CHAS3-S specifications
| Form factor | 5U, modular chassis |
|---|---|
| Dimensions (H x W x D) | 8.7 x 17.5 x 24.5 in (22.1 x 44.5 x 62.2 cm) |
| Weight (chassis only) | 52 lb / 23.58 kg |
| Power supplies and fans | Not included (spare chassis) |
| Operating temperature | 32° through 104° F / 0° through 40° C |
| Operating system | Junos OS |
Full specifications (16)
Chassis
| Chassis type | Modular |
|---|---|
| Form Factor | 5U |
| Chassis Height | 8.7 in / 22.098 cm |
| Chassis Width | 17.5 in / 44.45 cm |
| Chassis Depth | 24.5 in / 62.23 cm |
| Weight (chassis only) | 52 lb / 23.58 kg |
Cooling
| Fan trays | 1 |
|---|---|
| Hot-swappable fan trays | Yes |
Environmental
| Operating Temperature | 32° through 104° F / 0° through 40° C |
|---|---|
| Storage Temperature | -40° through 158° F / -40° through 70° C |
| Operating Altitude | 10000 ft / 3048 m |
| Humidity, operating (noncondensing) | 5% through 90% |
| Humidity, non-operating (noncondensing) | 5% through 95% |
| Seismic Tolerance | Zone 4 |
| Maintenance Clearance | 30 in / 76.2 cm |
Software
| Operating system | Junos OS |
|---|
Common questions
Does the EX9204-CHAS3-S include power supplies?
No. It is the chassis and passive midplane only. Power supplies, routing engines, switch fabric and line cards are ordered separately.
How tall is the EX9204?
5U. The chassis measures 8.7 x 17.5 x 24.5 in (22.1 x 44.5 x 62.2 cm) and weighs 52 lb (23.6 kg) on its own.
What is the difference between the EX9204-CHAS3-S and the EX9204-BASE3C-AC?
The BASE3C-AC is a complete system: chassis, one routing engine, one SF3 switch fabric module and two AC power supplies. The CHAS3-S is the chassis alone.


