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
 | Low Price Guarantee |  | Quality Assurance |
 | 100% Money Back Guarantee |  | Commodity Refund Guarantee |
 | Diversified and Flexible Transportation Services |  | Standard Policy |
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?
EX3400-48T-AFI is in stock at YYST Global. Contact the sales team to confirm the required quantity, exact configuration, delivery destination and current lead time before ordering.
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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