Elgato Game Capture 4K60 S+ can be used as a stand alone product, recording to SD Cards.
When using Elgato Game Capture 4K60 S+ for standalone SD Card recording, DO NOT connect it to a PC via USB. Only use the power supply bundled with your product.
SD Card Format
Elgato Game Capture 4K60 S+ supports exFAT and FAT32. Most current SD Cards come pre-formatted in exFAT, and exFAT is our recommended format.
If your cards are not pre-formatted, you can format them using a computer or many cameras. Elgato Game Capture 4K60 S+ cannot format cards.
If you insert an unformatted card, the status LED on Elgato Game Capture 4K60 S+ will blink the general error code.
SD Card Format - FAT32 Limitations
If you use FAT32. then your larger recordings will automatically be broken down into multiple 4GB segments.
The files are cleanly split during recording.
To edit with them, simply drag them into a video editor in the numbered order.
SD Card Access
If you record files on the SD Card that is installed in your Elgato Game Capture 4K60 S+, then those files are not accessible to your computer, even if your Elgato Game Capture 4K60 S+ is attached to your computer.
To access the SD Card, remove it from the Elgato Game Capture 4K60 S+ and then use a SD Card reader attached to your computer to access the files.
SD Card Capacity
By default, the bitrate for a 4K (3840x2160p) input is 80,000 Kbps or 80Mbps. This equals about 36GB/per hour of recording.
You can adjust the bitrate and other aspects of the recording, by editing a settings.txt file that the Elgato automatically places on the SD Card. See this article for more details:
When you are recording and reach the end of the card capacity, Elgato Game Capture 4K60 S+ will leave 90MB or so free so it can properly finish off the file. Afterwards the recording simply stops, but it will not be corrupted.
MicroSD Card Speed
MicroSD Cards can be used, with an adapter.
The MicroSD Card minimum recommended speed is UHS Class 3 / V30.