Cisco part number WS-X6904-40G-2TXL identifies the WS-X6904-40G-2TXL - Cisco Catalyst 6900 Series 4 x Ports 40 Gigabit Ethernet Module For Fiber Module, an enterprise-grade Switch Modules unit appropriate for data-center, server-room, and workstation deployment. Technical specifications include network speed of 40 GbE. Typical use cases include enterprise LAN core-distribution-access architecture, hyperconverged cluster east-west traffic, SAN fabric uplinks, and replacement of EOL/EOSL networking infrastructure under existing OEM warranty contracts. Pro Disk Network sources the WS-X6904-40G-2TXL through reputable distribution channels and applies a verification check against the OEM compatibility matrix before each unit is added to active inventory. Each unit ships from a US fulfillment hub (Hillsboro OR, Atlanta GA, or Phoenix AZ) with same-day dispatch on in-stock orders before 3pm ET. 90-day Pro Disk Network functional warranty included; free US ground shipping on orders over $150.
The WS-X6904-40G-2TXL is a Cisco switch modules component with network speed 40 GbE. Pricing on the WS-X6904-40G-2TXL 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 WS-X6904-40G-2TXL 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 WS-X6904-40G-2TXL compatible with my switch?
Pro Disk Network validates every WS-X6904-40G-2TXL 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 WS-X6904-40G-2TXL ship?
WS-X6904-40G-2TXL 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 WS-X6904-40G-2TXL 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 WS-X6904-40G-2TXL?
The WS-X6904-40G-2TXL is a Cisco enterprise networking device with network speed 40 GbE, manufactured by Cisco. 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 WS-X6904-40G-2TXL
Pros
Same-day US shipping cuts deployment downtime
Cons
Not for hyperscale ZR coherent — different SKU family
Some vendors deprecate firmware on EOL part numbers
Mismatched optic+switch firmware can require manual override
Frequently Asked Questions about WS-X6904-40G-2TXL
Is the WS-X6904-40G-2TXL a genuine Cisco part?
Yes. Pro Disk Network sources every WS-X6904-40G-2TXL as factory-original Cisco inventory. New units arrive sealed in OEM packaging; refurbished units are pulled from decommissioned Cisco servers, surface-tested, and re-warranted by Pro Disk Network for 90 days.
Is the WS-X6904-40G-2TXL compatible with my switch?
Pro Disk Network validates every WS-X6904-40G-2TXL 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 WS-X6904-40G-2TXL ship?
WS-X6904-40G-2TXL 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 WS-X6904-40G-2TXL?
New WS-X6904-40G-2TXL units carry the full Cisco 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 WS-X6904-40G-2TXL?
Email sales@prodisknetwork.com with the quantity and target ship date for a quote within one business day.
Other parts that share the WS series prefix — useful when sourcing matched lots, hot-spare pools, or capacity-tier expansions.
WS-X6904-40G-2T — Cisco Catalyst WS-X6904-40G-2T 6900 Series 4 x Ports 40 Gigabit Ethernet Module For Fiber Module Spare — $19,305.68
WS-X6908-10G-2T — WS-X6908-10G-2T - Cisco Catalyst 6900 Series 8 x Ports Gigabit Ethernet Fiber Module — $683.95
WS-X6908-10G-2TXL — WS-X6908-10G-2TXL - Cisco Catalyst 6900 Series 8 x Ports Gigabit Ethernet Fiber Module — $2,124.41
Pro Disk Network Buyer’s Guide: Switch Modules
Optic Coding, Vendor Lock-In, and Multi-Vendor Compatibility
For Cisco IOS, IOS-XE, and NX-OS switches, the WS-X6904-40G-2TXL 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.