Lenovo SI4093 FLexSystem Fabric SI4093 14 x SFP+ 10GBase-X + 10 x Ports 10GbE + 2 x Ports 1GbE RJ-45 InterConnect Expansion Module. In Stock Brand: Lenovo Part Number: SI4093 Category: Transceiver Key Specs: 10GB, 10GbE, 1GbE Availability: In Stock Shipping: Fast US-based shipping Order the Lenovo SI4093 today from ProDisk Network — your trusted source for enterprise IT hardware. All products are quality-tested and backed by our support team.
The SI4093 is a Lenovo transceiver component with network speed 10 GbE. Pricing on the SI4093 is quote-based — email sales@prodisknetwork.com or use our live chat for a quote within one business day.
Quick Answer: Is the SI4093 compatible with my switch?
Pro Disk Network validates every SI4093 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 SI4093 ship?
If in stock, the SI4093 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 SI4093 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 SI4093?
The SI4093 is a Lenovo network interface module with network speed 10 GbE, manufactured by Lenovo. 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 SI4093
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 SI4093
Is the SI4093 a genuine Lenovo part?
Yes. Pro Disk Network sources every SI4093 as factory-original Lenovo inventory. New units arrive sealed in OEM packaging; refurbished units are pulled from decommissioned Lenovo servers, surface-tested, and re-warranted by Pro Disk Network for 90 days.
Is the SI4093 compatible with my switch?
Pro Disk Network validates every SI4093 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 SI4093 ship?
If in stock, the SI4093 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 SI4093?
New SI4093 units carry the full Lenovo 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 SI4093?
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 SI4093 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 SI4093 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 SI4093 and the connected NICs support jumbo frames — some older NICs cap at 9000-byte payloads even when jumbo-enabled.