The Cisco Nexus 9372TX is a 1RU top-of-rack data centre switch presenting 48 BASE-T access ports that negotiate at 100 Megabit, 1 Gigabit or 10 Gigabit, plus 6 fixed QSFP+ uplink ports at 40 Gigabit. It carries 1.44 Tbps of switching capacity and 1150 million packets per second of forwarding, making it the copper-access counterpart to the fibre-access 9372PX.
Ten Gigabit over copper, and why that still matters
Copper access at 10 Gigabit is the whole argument for this switch. Servers with 10GBASE-T network cards connect on structured twisted-pair cabling rather than on fibre or direct-attach cable, which removes optics from the bill of materials and lets an existing copper plant carry a 10 Gigabit refresh. In a rack of mixed-age hosts the same 48 ports will also negotiate down to 1 Gigabit and 100 Megabit, so older appliances share the switch without needing a second one.
| Specification | Nexus 9372TX |
|---|---|
| Rack height | 1RU |
| Access ports | 48 x BASE-T, 100M/1G/10G |
| Uplink ports | 6 x QSFP+, 40 Gbps, fixed |
| Switching capacity | 1.44 Tbps |
| Forwarding rate | 1150 mpps |
| Typical power draw | 374.5 W |
| Maximum power draw | 694 W |
| Weight | 22.6 lb |
Power draw is the number a copper switch changes
Ten Gigabit over copper costs power, and this switch is where that shows up in a rack budget. Typical draw is 374.5 W against a maximum of 694 W, materially above a comparable fibre-access switch, because the physical layer transceivers for 10GBASE-T are built into the switch rather than into the optics. Size the rack circuit and the cooling against the maximum figure, and account for the difference when comparing this model against a fibre design on total cost rather than on purchase price alone.
The uplinks are fixed, and there is no module bay
Uplink ports on this switch are fixed 40 Gigabit QSFP+, soldered as part of the chassis. There is no module slot, so a Nexus 9300 uplink module cannot be installed and no uplink upgrade path exists on this hardware. Cisco documents the 12-port 40 Gigabit uplink module as fitting the Nexus 9396PX, 9396TX and 93128TX only, at 12, 12 and 8 active ports respectively. A design that assumes a modular uplink path has to begin from one of those chassis instead.
Mixed-speed racks and why the negotiation range matters
Rate negotiation across 100 Megabit, 1 Gigabit and 10 Gigabit on every access port is what lets one switch serve a rack that was not refreshed all at once. Older appliances, out-of-band interfaces and management ports sit at 100 Megabit or 1 Gigabit; recently refreshed hosts sit at 10 Gigabit. On a switch without that range those two groups need separate hardware, separate uplinks and separate cabling.
The practical planning point is that ports do not need to be assigned by speed in advance. A rack can be cabled once and the hosts moved through their refresh cycle over years without the switch becoming the constraint that forces the schedule.
Where the 9372TX sits in our Nexus range
| Model | Access ports | Uplinks | Capacity |
|---|---|---|---|
| Nexus 9372TX | 48 x 100M/1/10G BASE-T | 6 x 40G QSFP+ | 1.44 Tbps |
| Nexus 9348GC-FXP | 48 x 100M/1G BASE-T | 4 x 25G SFP28, 2 x 100G QSFP28 | 696 Gbps |
| Nexus 93180YC-EX | 48 x 1/10/25G SFP28 | 6 x 40/100G QSFP28 | 3.6 Tbps |
Where the access requirement is Gigabit copper with a 100 Gigabit uplink path, the Nexus 9348GC-FXP is the better answer and costs less power per rack. Where it is 25 Gigabit fibre with a live Cisco support window, the Nexus 93180YC-EX is. This switch is specified when the servers genuinely present 10GBASE-T. The wider range is on the Cisco networking hardware page.
Lifecycle and support horizon
Cisco end-of-life notice EOL11922 covers this switch alongside its fibre-access sibling and every milestone in it has passed. End-of-Sale for the hardware was 3 February 2018 and the Last Ship Date was 4 May 2018. End of Vulnerability and Security Support and the Last Date of Support for the hardware both fell on 28 February 2023.
Cisco therefore provides neither hardware service nor software fixes for this platform. A 9372TX is bought to match, spare or extend an installed fabric already running this generation, where hardware consistency is worth more than a forward support runway. For a new build the 93180YC-EX is the honest alternative and it is supported into 2027.
Condition, testing and what ships
Units are refurbished enterprise hardware carrying the original Cisco part number. Each switch is tested on receipt, then disassembled, cleaned, inventoried, picked, assembled, configured and tested again on the bench before it ships. Whole systems including this switch carry the 2-year Enterasource warranty, with free FedEx Ground delivery to the lower 48 states.
Power supplies and fan trays are matched to a stated airflow direction at order time rather than inferred from a suffix. QSFP+ transceivers are quoted separately. Cisco software entitlement is not included and does not transfer with used hardware. Where a unit is quoted without a published price it is supplied on a quotation basis, and the configuration is confirmed in writing before despatch rather than assumed from the listing.
Frequently Asked Questions
Does the Nexus 9372TX support 10 Gigabit over copper?
Yes, on all 48 access ports. They are BASE-T ports that negotiate at 100 Megabit, 1 Gigabit or 10 Gigabit, which means a 10 Gigabit server refresh can run on structured twisted-pair cabling without optics or direct-attach cables. The 6 uplink ports are a different media type entirely: fixed 40 Gigabit QSFP+.
How much power does a Nexus 9372TX use?
Typical draw is 374.5 W and the published maximum is 694 W. That is noticeably higher than a fibre-access switch of similar capacity because the 10GBASE-T physical layer sits inside the chassis rather than in pluggable optics. Rack power and cooling should be planned against the maximum figure, and the difference is worth including when comparing copper and fibre designs.
Can an uplink module be added to a Nexus 9372TX?
No. The 6 QSFP+ uplinks are fixed and the chassis has no module bay, so there is no upgrade path from 40 Gigabit to 100 Gigabit uplinks on this switch. Cisco documents its 12-port 40 Gigabit uplink module as fitting the Nexus 9396PX, 9396TX and 93128TX only, with 12, 12 and 8 active ports respectively depending on the host.
What is the difference between the Nexus 9372TX and the 9372PX?
Access media only. The TX presents 48 BASE-T copper ports at 100 Megabit, 1 Gigabit or 10 Gigabit; the PX presents 48 SFP+ ports for 10 Gigabit fibre or direct-attach copper. Switching capacity is 1.44 Tbps and forwarding is 1150 million packets per second on both, and both carry the same 6 fixed 40 Gigabit QSFP+ uplinks.
Is the Nexus 9372TX still supported by Cisco?
No. Under notice EOL11922 the End-of-Sale date was 3 February 2018 and the Last Ship Date was 4 May 2018, while End of Vulnerability and Security Support and the Last Date of Support for the hardware both fell on 28 February 2023. Cisco issues neither hardware service nor software fixes for this platform now.
What testing does a refurbished Nexus 9300 switch get before despatch?
Two bench passes. The first runs on arrival and qualifies the chassis before it enters stock, after which the unit is disassembled, cleaned and inventoried. The second runs after the switch has been picked, reassembled and configured for the order, immediately before packing. Cosmetic grading and any physical defect are recorded per unit and published on its listing.
