The Cisco CWDM-X2-1610NM-40KM (CWDM-X2-1610NM-40KM - Cisco 10Gb/s 10GBase-CWDM Single-Mode Fiber 40km 1610nm Duplex SC Connector X2 Transceiver Module) is a Transceiver component engineered for sustained enterprise-class workloads. This part addresses common procurement scenarios where exact-match replacement, capacity expansion, or new-build deployment is required. Technical specifications include capacity of 10 GB, data rate of 10 Gb/s, network speed of 10 GbE, wavelength of 1610 nm, range of 40 km. Common deployment scenarios include data-center ToR (top-of-rack) switching, server-to-storage NAS/SAN connectivity, 10/25/40/100 GbE backbone aggregation, and edge router replacement in branch-office deployments. Pro Disk Network supplies the CWDM-X2-1610NM-40KM to US business buyers. Stocked units ship same-day on in-stock orders placed before 3pm ET. Pro Disk Network applies a 90-day functional warranty. Free US ground shipping on orders over $150; same-day expedited (UPS Next Day Air, FedEx Priority) available at checkout.
The CWDM-X2-1610NM-40KM is a Cisco transceiver component with capacity 10 GB, data rate 10 Gb/s, network speed 10 GbE. Pricing on the CWDM-X2-1610NM-40KM is quote-based — email sales@prodisknetwork.com or use our live chat for a quote within one business day.
Reviewed By
Reviewed by:Pro Disk Network Engineering Team — . Specifications, compatibility, and pricing for the CWDM-X2-1610NM-40KM are shown on this page.
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US-based LLC — 7345 W Sand Lake Rd, STE 210, Office 3208, Orlando, FL 32819
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 CWDM-X2-1610NM-40KM compatible with my switch?
Pro Disk Network validates every CWDM-X2-1610NM-40KM 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 CWDM-X2-1610NM-40KM ship?
If in stock, the CWDM-X2-1610NM-40KM ships same business day on US orders placed before 3 pm ET. Most US ZIP codes receive next-business-day or 2-day delivery via FedEx/UPS Ground or Express. Bulk and project orders shipping in pallets are typically dispatched within 24-48 hours.
The CWDM-X2-1610NM-40KM 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.
Spine-Leaf Fabric — Top-of-rack 25G/100G aggregation between leaf and spine switches. Match speed and form factor across both endpoints.
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.
What is the CWDM-X2-1610NM-40KM?
The CWDM-X2-1610NM-40KM is a Cisco network interface module with capacity 10 GB and data rate 10 Gb/s, 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 CWDM-X2-1610NM-40KM
Pros
Same-day US shipping cuts deployment downtime
Cons
Refurbished switches may show minor rack-rail wear
Power supplies sold separately on certain SKUs
Long-haul ZR4/CFP4 modules subject to export-control screening
Frequently Asked Questions about CWDM-X2-1610NM-40KM
Is the CWDM-X2-1610NM-40KM a genuine Cisco part?
Yes. Pro Disk Network sources every CWDM-X2-1610NM-40KM 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 CWDM-X2-1610NM-40KM compatible with my switch?
Pro Disk Network validates every CWDM-X2-1610NM-40KM 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 CWDM-X2-1610NM-40KM ship?
If in stock, the CWDM-X2-1610NM-40KM ships same business day on US orders placed before 3 pm ET. Most US ZIP codes receive next-business-day or 2-day delivery via FedEx/UPS Ground or Express. Bulk and project orders shipping in pallets are typically dispatched within 24-48 hours.
What is the warranty on the CWDM-X2-1610NM-40KM?
New CWDM-X2-1610NM-40KM 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 CWDM-X2-1610NM-40KM?
Email sales@prodisknetwork.com with the quantity and target ship date for a quote within one business day.
Optic Coding, Vendor Lock-In, and Multi-Vendor Compatibility
Networking optics — SFP, SFP+, QSFP+, QSFP28 — are physically interoperable across vendors but logically restricted by firmware coding. The CWDM-X2-1610NM-40KM is coded for a specific vendor family at our factory step before shipping, which preserves the OEM warranty workflow and allows the optic to be recognised without ‘service unsupported-transceiver’ CLI overrides. Mixing third-party optics with same-vendor optics in the same chassis is safe; mixing across vendor codings sometimes triggers warnings in the switch log.
Bandwidth Sizing for Spine-Leaf, EVPN-VXLAN, and Hyperconverged Storage
For EVPN-VXLAN overlays, the CWDM-X2-1610NM-40KM carries the underlay tunnels in addition to the workload traffic. Plan for VXLAN encapsulation overhead (50 bytes) plus MTU headroom; set the underlay MTU to 9216 (jumbo frames) and the overlay MTU to 9000. Make sure both the CWDM-X2-1610NM-40KM and the connected NICs support jumbo frames — some older NICs cap at 9000-byte payloads even when jumbo-enabled.