Kobo wireless e reader?
This thread is about Kobo Touch reader which has wifi.
Kobo once made Kobo Wifi model without touch screen.
https://wiki.mobileread.com/wiki/Kobo_Wireless_eReader
All Kobo eink readers are rated for (Kobo Wifi) High Capacity SD card or (Kobo Touch) Micro High Capacity SD card, with Maximum of 32gig. Larger SD cards can be used up to 64gig with different than stock formatting. Have not heard of larger than 64gig SD cards being used yet.
http://en.wikipedia.org/wiki/Wi-Fi