EX4400-EM-4S — Juniper EX4400 Series 4x10G SFP+ Uplink/Extension Module (Line Card, Requires EX4400 Chassis)
MPN: EX4400-EM-4S|By: Juniper

In Stockships worldwide
- Condition:
- New — authorized channel
- Warranty:
- Full manufacturer warranty
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Product overview
Part number EX4400-EM-4S identifies this Juniper EX4400 series 4x10G SFP+ uplink/extension Module (line card, requires EX4400 chassis). A switch is rarely the whole order: optics, breakout cables, the right power orientation and a rail kit all have to arrive with it. Send the topology and we will quote the complete bill of materials.
No price is published here because the market for this part moves week to week; ask and we will give you a current one rather than a stale one.
Featuring
- Port Configuration
- 4x10G
- Manufacturer
- Juniper
Physical characteristics
- Product Type
- Network Switches
- Expedited shipping options are available — rates confirmed with your quote.
- Purchase orders accepted from qualified institutions.
- Compatibility is validated against your server platform before dispatch. Send us the model and we will confirm support.
These are the 3 facts we can state about EX4400-EM-4S without inferring anything. Compatibility beyond this is confirmed per platform, on request, before you order.
Where the Juniper EX4400-EM-4S is deployed
- Swapping out a failed network switch for EX4400-EM-4S under change control
- Adding a top-of-rack switch to an existing fabric
- Extending the access layer for a new floor or building
Who this part is for
- Network teams replacing a failed switch under change control
- Teams adding an access layer or a top-of-rack switch to a live fabric
- MSPs standardising a customer estate on one switching platform
What you get ordering this from us
Ordered by part number
EX4400-EM-4S is what is quoted and EX4400-EM-4S is what ships; where an alternate code is genuinely the same part we name it rather than swap it silently.
Compatibility checked
We confirm the part is supported on your platform before it ships, rather than leaving the check to you.
Airflow variant confirmed
We check the airflow direction against your aisle before shipping, because the wrong variant runs hot for the life of the switch.
Questions buyers ask about this part
- Is EX4400-EM-4S genuine and is the warranty intact?
- Yes. It ships new in Juniper packaging, which is what keeps the warranty and the firmware entitlement valid. Anything we cannot supply that way we tell you about before you order.
- Will EX4400-EM-4S work in my server?
- Tell us what it is aggregating and what optics you already hold. We confirm the port mix, the uplink capacity and the airflow variant, and we will list the optics and rail kit you will also need.
- Do you accept purchase orders and quote at volume?
- Yes. We quote against a purchase order and hold the price for the quote period, with tiered rates at quantity. Net terms are available once the account is approved.
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Specifying a system, not just the part?
Multi-node training is bounded by the fabric between the nodes, so the switch is specified with the cluster rather than after it.
