Key Technical Specifications
- Product Model: AT-2712FX/MT-SB-901 (990-004100-901)
- Manufacturer: ALLIED TELESIS
- Bus Interface: PCI Express x1
- Network Standard: IEEE 802.3u 100BASE-FX, full/half duplex auto-negotiation
- Fiber Connector: MT multi-mode fiber port
- Maximum Data Rate: 100 Mbps
- Offload Features: IPv4/IPv6 checksum offload, large send offload, IPSec security association offload
- Manageability: DASH v1.1, Wake-on-LAN (WoL)
- Operating Temperature: 0 °C to +50 °C, desktop/server chassis mount
- Compliance: TAA, RoHS, FCC Class B
- Indicators: Link LED and Activity LED on card bracket
- Included Hardware: Standard-height bracket, low-profile bracket
Product Introduction
This Allied Telesis AT-2712FX/MT-SB-901 is a PCIe x1 secure fiber network adapter. It connects host computers over multi-mode 100BASE-FX fiber for fiber-to-desktop deployments.
The card handles IPSec offload locally to reduce host CPU load. It supports DASH remote management and WoL, with a maximum fiber link distance of 2 km over 62.5/125 μm multi-mode fiber.
Installation & Configuration Guide
Preparation (10 min)
- Power down the host computer and disconnect the AC power cord.
- Gather ESD wrist strap, Phillips screwdriver, and host PCIe slot layout drawing.
- Locate an available PCIe x1 slot; confirm the slot is not disabled in BIOS.
- Confirm the bracket height matches your chassis, standard or low-profile.
Removal (5–10 min)
- If replacing an existing NIC, uninstall the driver in OS first.
- Remove chassis rear bracket screw and pull the old card straight out.
- Disconnect fiber cable. Do not touch the polished fiber end face.
Installation (10 min)
- Fit the AT-2712FX/MT-SB-901 into the empty PCIe x1 slot.
- Press firmly until the gold edge connector seats fully. Secure the bracket screw.
- Attach the MT fiber cable to the port on the card bracket.
- Close chassis cover and reconnect AC power.
Power-On & Test (10 min)
- Boot the host and open device manager. Confirm the NIC appears without yellow warnings.
- Install the Allied Telesis driver matching your OS version.
- Verify link LED illuminates; generate ping traffic to test link activity.
- Configure IP addressing and validate end-to-end fiber throughput.
Troubleshooting Quick Reference
- No link / LED off: Check fiber cable polarity. Clean MT connector end faces. Confirm remote switch port is 100BASE-FX.
- Link up but no traffic: Verify subnet and gateway settings. Check host firewall rules.
- Intermittent packet loss: Inspect fiber for sharp bends. Confirm no excessive dust on MT ferrule.
- Driver fails to load: Download the correct Allied Telesis driver. Disable unused PCIe power management in BIOS.
- WoL not working: Enable WoL in BIOS and NIC advanced properties. Confirm switch port supports magic packet.
Dimensions, Mounting & Wiring Notes
- H×W×D: 120 mm × 70 mm × 18 mm
- Mounting method: PCIe slot mount, standard or low-profile bracket for desktop/rack chassis
- Terminal notes: Use only multi-mode 100BASE-FX MT fiber assemblies. Keep fiber bend radius ≥30 mm. Do not route fiber next to high-current power cables.
FAQ
Q: Will this card work in a PCIe x4 or x16 slot? A: Yes. PCIe is backward compatible; the card negotiates to x1 speed in wider PCIe slots.
Q: What condition will my unit arrive in? A: Available stock is Refurbished (Tested). Every unit passes our full SOP test sequence before shipment. Factory sealed new original stock is not available.
Q: Can I use single-mode fiber with this NIC? A: No. This model is built for multi-mode fiber only. Single-mode transceivers and fiber will not establish a stable link.
Q: I want to replace my old Allied Telesis fiber NIC. Do I need to reinstall drivers? A: Yes. Even for the same AT-2712FX family, re-install the official driver to avoid offload or DASH management faults. Back up network settings before swap.
Q: I’m worried about fiber end contamination. How should I handle it? A: Always cap unused MT connectors. Use lint-free fiber cleaning wipes if dust accumulates. Oil from fingerprints permanently degrades optical performance.
Q: What is the risk of ESD damage during handling? A: High. Static discharge can damage internal PHY circuits without visible burn marks. Always wear a grounded wrist strap when touching the PCB or edge connector.
