Find Intel X553 compatible RJ45 adapters?

According to lspci, one of my Linux machines has "Intel Corporation Ethernet Connection X553 10 GbE SFP+" holes. I bought a Ubiquiti SFP RJ45 adapter, but the ixgbe device driver says they're unsupported. This is a Qotom brand fanless server running up-to-date Arch Linux, kernel 6.13.12-hardened1-2-hardened. Both the in-kernel-tree ixgbe device and a self-compiled ixgbe 6.1.3, downloaded from the Intel web site, give the same error, here's dmesg output when I loaded the 6.1.3 Intel driver:

[ 1290.001874] ixgbe: loading out-of-tree module taints kernel.
[ 1290.001913] ixgbe: module verification failed: signature and/or required key missing - tainting kernel
[ 1290.047828] Intel(R) 10GbE PCI Express Linux Network Driver - version 6.1.3
[ 1290.047839] Copyright (C) 1999 - 2025 Intel Corporation
[ 1290.052272] ixgbe 0000:0b:00.0 0000:0b:00.0 (uninitialized): allow_unsupported_sfp Enabled
[ 1290.096489] ixgbe 0000:0b:00.0: failed to load because an unsupported SFP+ or QSFP module type was detected.
[ 1290.096497] ixgbe 0000:0b:00.0: Reload the driver after installing a supported module.

I loaded ixgbe modules like this:

modprobe -v ./ixgbe.ko allow_unsupported_sfp=1

As near as I can tell from reading the source code, allow_unsupported only applies to certain Intel PCIe ethernet devices. I didn't realize this was too much of a thing, so I hadn't really researched it. Now that I have tried, my question is: How Do I find RJ45 SFP adapters that are compatible to Intel X553s? DuckDuckGo and Google don't have much to offer but some Intel forum posts from 10 years ago.