3Com 3Com 3C905B 3Com 3C905B EtherLink XL 1 x Port RJ-45 10/100Base-TX PCI Fast Ethernet Network Interface Card. In Stock Brand: 3Com Part Number: 3Com 3C905B Category: NIC Availability: In Stock Shipping: Fast US-based shipping Order the 3Com 3Com 3C905B today from ProDisk Network — your trusted source for enterprise IT hardware. All products are quality-tested and backed by our support team.
The 3COM 3C905B is a enterprise-grade network adapters component. Pricing on the 3COM 3C905B is quote-based — email sales@prodisknetwork.com or use our live chat for a quote within one business day.
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Reviewed by:Pro Disk Network Engineering Team — . Specifications, compatibility, and pricing for the 3COM 3C905B are shown on this page.
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Same-Day US Shipping — orders before 3pm ET ship today via UPS
30-Day Returns — pre-paid label on DOA and defective items
Quick Answer: Is the 3COM 3C905B compatible with my switch?
Pro Disk Network validates every 3COM 3C905B against the target switch's published compatibility matrix before shipment. If you let us know your switch model and firmware version, we will confirm fitment and code the module appropriately (Cisco-coded, Juniper-coded, HPE-coded, etc.) at no extra charge.
How fast does the 3COM 3C905B ship?
3COM 3C905B orders placed before 3 pm ET ship the same business day from US warehouses. Delivery is next business day to most metro ZIPs via FedEx/UPS overnight; ground delivery covers remaining US in 1-4 business days.
The 3COM 3C905B is deployed by US enterprises, MSPs, government, and education customers across multiple infrastructure scenarios. Below are the most common deployment patterns Pro Disk Network sees in real-world orders.
Server Uplink — 10G/25G server-to-leaf uplink — pair with matching DAC or AOC at the host NIC to avoid optic mismatch.
DCI (Data Center Interconnect) — Inter-DC routing or aggregation. LR4/LR8 transceivers for 10–80 km, ER4 for 40 km, ZR4 for coherent long-haul.
Campus Distribution — Catalyst-class campus distribution between IDF and MDF closets. PoE+ where wireless APs and IP phones share infrastructure.
Branch / Edge — Smaller form-factor switches and routers for branch sites. SD-WAN-compatible or static-VPN-attached as the architecture dictates.
What is the 3COM 3C905B?
The 3COM 3C905B is a enterprise networking device, manufactured for enterprise IT deployments. Pro Disk Network ships this part new and certified-refurbished from our US warehouse with same-day dispatch on orders placed before 3 PM ET, backed by a 30-day return guarantee.
Pros & Cons of 3COM 3C905B
Pros
Same-day US shipping cuts deployment downtime
Cons
Third-party optic — some firmware revs require "service unsupported transceiver-type"
Bulk DAC orders may ship LTL on >100-pc reels
Confirm transceiver coding before mixing vendors in the same chassis
Frequently Asked Questions about 3COM 3C905B
Is the 3COM 3C905B a genuine part?
Yes. Pro Disk Network sources every 3COM 3C905B as factory-original inventory. New units arrive sealed in OEM packaging; refurbished units are pulled from decommissioned servers, surface-tested, and re-warranted by Pro Disk Network for 90 days.
Is the 3COM 3C905B compatible with my switch?
Pro Disk Network validates every 3COM 3C905B against the target switch's published compatibility matrix before shipment. If you let us know your switch model and firmware version, we will confirm fitment and code the module appropriately (Cisco-coded, Juniper-coded, HPE-coded, etc.) at no extra charge.
How fast does the 3COM 3C905B ship?
3COM 3C905B orders placed before 3 pm ET ship the same business day from US warehouses. Delivery is next business day to most metro ZIPs via FedEx/UPS overnight; ground delivery covers remaining US in 1-4 business days.
What is the warranty on the 3COM 3C905B?
New 3COM 3C905B units carry the full manufacturer warranty (typically 1 to 5 years depending on product line). Refurbished and bulk-OEM units include a Pro Disk Network advance-replacement warranty (90 days refurbished). DOA replacement is free within 30 days of receipt.
Do you offer bulk pricing for the 3COM 3C905B?
Email sales@prodisknetwork.com with the quantity and target ship date for a quote within one business day.
Other parts that share the 3COM 3 series prefix — useful when sourcing matched lots, hot-spare pools, or capacity-tier expansions.
3COM 3C905B-TX-NM — 3Com 3Com 3C905B-TX-NM 3Com 3C905B-TX-NM EtherLink XL 1 x Port RJ-45 10/100Base-TX PCI Fast Ethernet Network Interface Card — $70.00
Pro Disk Network Buyer’s Guide: Network Adapters
Optic Coding, Vendor Lock-In, and Multi-Vendor Compatibility
For Cisco IOS, IOS-XE, and NX-OS switches, the 3COM 3C905B works out-of-box if coded for Cisco; for Aruba ArubaOS-CX, code for HPE/Aruba; for Juniper Junos, code for Juniper. Pro Disk Network confirms the target vendor coding at order time and applies it before shipping. Misordered coding can be flashed in the field but the lead time is longer than ordering correctly the first time.
Bandwidth Sizing for Spine-Leaf, EVPN-VXLAN, and Hyperconverged Storage
Document optic types and bandwidth in your network drawings: SR-SR for intra-rack, LR-LR for inter-rack and DCI, ZR4 for long-haul coherent. Mismatched optic-distance ratings is the most common cause of intermittent link errors that look like cable problems but aren't.