By Andrew Armstrong 
Add Custom Drivers to VMware vSphere in 2025
VMware vSphere 8.0 Update 2 rules virtualization in 2025, but some hardware—like Realtek NICs—still needs custom drivers, especially for homelabs. This guide walks you through injecting drivers into ESXi for modern setups.
Step 1: Gather Tools
Download the vSphere 8.0 U2 ISO from VMware Customer Connect (login required). Grab the latest ESXi-Customizer-PS script from GitHub and your driver VIB (e.g., Realtek’s net55-r8168 from VIBs Depot).
Step 2: Build the Custom ISO
In PowerShell 7.4, run:.\ESXi-Customizer-PS.ps1 -v80 -vib "net55-r8168-8.045a-napi.vib" -outDir "C:\CustomISO"
This merges the Realtek driver into the vSphere 8.0 ISO. Takes 5-10 minutes.
Step 3: Deploy
Burn the ISO to USB with Rufus 4.5, boot your server, and install as usual. Verify the NIC loads via esxcli network nic list in the ESXi shell—look for “r8168”.
2025 Context: Licensing Shift
Post-Broadcom acquisition (2023), free ESXi is gone. vSphere Essentials ($500/year) is the entry point in 2025—worth it for homelabs over hacky workarounds.
Check our PowerShell Disk Space Guide for monitoring tips.
Recommended: A USB Network Adapter
If your hardware’s built-in NIC isn’t on VMware’s compatibility list and you’d rather not mess with custom drivers at all, a well-supported USB-to-Ethernet adapter is often the simpler workaround for lab and home-lab boxes.
Disclosure: this post may contain affiliate links. If you buy through one of them, we may earn a small commission at no extra cost to you. We only recommend products we’ve tested or genuinely rate.
Gear We Recommend
Running this in a home lab? Here’s the gear that keeps our test environment reliable.
Browse our Home Lab Essentials picks on AmazonAs an Amazon Associate, TechyGeeksHome earns from qualifying purchases.
Get the download
VMWare VIB Package for Additional Network Card Drivers is available as a free download.
Download Now →Discover more from TechyGeeksHome
Subscribe to get the latest posts sent to your email.
