Switching Accessories
Switching Accessories holds the replaceable network switch parts: switch power supplies for Juniper EX, Cisco Catalyst and Nexus, Dell Networking, HPE and Arista switches, switch fan modules in normal and reverse airflow, and rack mount kits and rack ears. Start from the part number printed on the module you are replacing, and keep the airflow direction the same as the units already in the switch. Stocked power supplies and fans are eligible for same-day dispatch, and complete EX Series systems are under Juniper switches.
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Juniper JPSU-600-AC-AFO EX3400 600W AC Normal Airflow Power SupplyAvailability: Available by QuoteManufacturer: Juniper Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock - Juniper JPSU-150-AC-AFO EX3400 150W AC Normal Airflow Power SupplyAvailability: Available by QuoteManufacturer: Juniper Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Juniper JPSU-150-DC-AFO EX3400 150W DC Normal Airflow Power SupplyAvailability: Available by QuoteManufacturer: Juniper Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Juniper JPSU-920-AC-AFO EX3400 920W AC Normal Airflow Power SupplyAvailability: Available by QuoteManufacturer: Juniper Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Juniper JPSU-150-AC-AFI EX3400 150W AC Reverse Airflow Power SupplyAvailability: Available by QuoteManufacturer: Juniper Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Juniper EX-PWR-600-AC EX4200 600W AC Power SupplyAvailability: Available by QuoteManufacturer: Juniper Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Juniper EX-PWR3-930-AC EX Series 930W AC Power Supply with PoE+ CapabilityAvailability: Available by QuoteManufacturer: Juniper Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Juniper EX-PWR-320-AC EX Series 320W AC Power SupplyAvailability: Available by QuoteManufacturer: Juniper Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Juniper EX-PWR-930-AC EX Series 930W AC Power SupplyAvailability: Available by QuoteManufacturer: Juniper Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Juniper EX-PWR-190-DC EX Series 190W DC Power SupplyAvailability: Available by QuoteManufacturer: Juniper Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Juniper JPSU-715-AC-AFO EX4300 715W AC Normal Airflow Power SupplyAvailability: Available by QuoteManufacturer: Juniper Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Juniper JPSU-350-AC-AFO EX4300 350W AC Normal Airflow Power SupplyAvailability: Available by QuoteManufacturer: Juniper Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
Switch FRUs and how to match them
Network switch parts are field-replaceable units (FRUs), and each class has its own matching rule:
| Part class | What has to match | Where to shop |
|---|---|---|
| Power supplies | The switch family, airflow that matches the fans in the chassis, and enough wattage for the PoE budget | Network switch power supplies |
| Fan modules | The switch family and the same airflow direction as the other fans and supplies | Switch fan modules |
| Rack mount kits | The switch family and chassis they are made for | Switch rack mount kits |
| Uplink and expansion modules | The switch family and the minimum software release the maker lists | Switch expansion modules |
| Stacking cables | The stacking system the switch uses | Stacking cables |
Airflow direction is a hard rule
Switches cool front-to-back or back-to-front, and the supplies and fans have to agree. Juniper's EX4300 hardware guide labels them AIR OUT (AFO) for front-to-back and AIR IN (AFI) for back-to-front, tells you never to mix the two labels in one chassis, and warns that mixing them hampers the cooling system and leads to overheating. The same guide treats fan modules as hot-insertable and hot-removable FRUs, removed one at a time, with the switch running for a limited period, 30 seconds, while one is out.
Wattage follows the PoE load
On PoE switches the supply sets how much power the ports can share. Cisco ships its Catalyst 9300 data-only models with a 350 W supply, PoE+ models with 715 W and UPOE models with 1100 W, so a replacement supply should match the one already in the switch or the PoE budget you plan to run. Complete switches are under Networking.
