Juniper EX3400-48T-AFI 48-Port Switch with Airflow In
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EX3400-48T-AFI Overview
EX3400-48T-AFI Airflow-Specific Configuration
EX3400-48T-AFI has 48 10/100/1000BASE-T access ports and no PoE capability. The AFI suffix identifies back-to-front cooling: air enters at the rear and exits at the port side. This is the opposite direction from the standard EX3400-48T AFO configuration.
Uplinks and Virtual Chassis
Four front-panel uplinks accept 1G SFP or 10G SFP+ transceivers. Two rear 40G QSFP+ ports are configured as Virtual Chassis ports by default and can be changed to network ports. Juniper supports up to ten EX3400 members in a Virtual Chassis; ordinary 1G SFP transceivers cannot form that chassis link.
Power Matching
Juniper lists JPSU-150-AC-AFI as the default 150 W AC supply. It is labeled AIR IN and includes an internal fan for back-to-front airflow. A second compatible supply can be installed, and all replacement cooling components must preserve the AFI direction.
- Confirm the complete EX3400-48T-AFI suffix.
- Do not plan PoE endpoints on this model.
- Match AIR IN power and cooling components.
- Verify optics and whether QSFP+ ports remain VCPs or become network ports.
Juniper EX3400 official system overview | Juniper EX3400 official power system
EX3400-48T-AFI Specification
| Exact model / SKU | EX3400-48T-AFI |
| Exact model | EX3400-48T-AFI |
| Access ports | 48 x 10/100/1000BASE-T Gigabit Ethernet |
| PoE | Not supported on this 48T model |
| Front uplinks | 4 x SFP/SFP+ supporting 1G or 10G |
| Rear ports | 2 x 40G QSFP+; Virtual Chassis ports by default |
| Virtual Chassis | Up to 10 EX3400 members |
| Default power supply | JPSU-150-AC-AFI, 150 W AC |
| Power slots | One required, up to two supported |
| Airflow | Back-to-front; AIR IN label |
| First documented Junos release | 15.1X53-D50 |
| Source match | Exact EX3400-48T-AFI ports, non-PoE identity, Virtual Chassis, 150 W AC supply and back-to-front airflow from official Juniper documentation |
| Official manufacturer reference | Juniper EX3400 official system overview |
| Model | EX3400-48T-AFI |
| Brand | JUNIPER |
| Category | Juniper EX3400 Series Ethernet Switches |
| Product name | EX3400-48T-AFI Juniper EX3400 Series Ethernet Switches |
| Condition | New Factory Sealed |
| Supplier | YYST Global |
EX3400-48T-AFI Warranty
 | Product Quotation |  | Condition and Packaging |
 | Return Eligibility |  | Returns and Replacement |
 | Shipping Arrangements |  | Warranty Terms |
EX3400-48T-AFI FAQ
What is EX3400-48T-AFI?
Juniper EX3400-48T-AFI 48-Port Switch with Airflow In is a JUNIPER EX3400 Series Ethernet Switches product supplied by YYST Global for enterprise IT procurement and infrastructure projects.
What interfaces and ports does EX3400-48T-AFI provide?
For EX3400-48T-AFI, the manufacturer specification lists access ports as 48 x 10/100/1000BASE-T Gigabit Ethernet.
What are the power requirements for EX3400-48T-AFI?
For EX3400-48T-AFI, the manufacturer specification lists poe as Not supported on this 48T model.
Is EX3400-48T-AFI available from YYST Global?
Contact YYST Global to confirm availability for EX3400-48T-AFI, the required quantity, exact configuration, delivery destination and current lead time before ordering. A product listing does not confirm current inventory.
What is the price of EX3400-48T-AFI?
The current reference price for EX3400-48T-AFI is US$ 1,339.00. Final pricing can change based on stock, quantity, configuration and delivery destination.
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