New Zotac ZBOX nano CI320 with internal sdcard reader.
Sdcard reader confirmed to work with Win7/Win8.

dmesg excerpt, kernel 3.16.3-1.gd2bbe7f-default

[    7.899265] sdhci: Secure Digital Host Controller Interface driver
[    7.899271] sdhci: Copyright(c) Pierre Ossman
[    7.901095] mmc0: no vqmmc regulator found
[    7.901102] mmc0: no vmmc regulator found
[    7.910035] mmc0: SDHCI controller on ACPI [80860F14:01] using ADMA
[    7.911446] mmc1: no vqmmc regulator found
[    7.911453] mmc1: no vmmc regulator found
[    7.913653] mmc1: SDHCI controller on ACPI [INT33BB:00] using ADMA
[    7.914144] sdhci-acpi 80860F16:00: failed to setup card detect gpio
[    7.915151] mmc2: no vqmmc regulator found
[    7.915155] mmc2: no vmmc regulator found
[    7.918624] mmc2: SDHCI controller on ACPI [80860F16:00] using ADMA

Result: sdcard reader not detected/listed via lsusb/lspci/lsscsi

Remark: Problem detected running OpenSuse 13.1 (3.11 kernel-desktop). Less
dmesg output. As this problem still exist with new kernel
3.16.3-1.gd2bbe7f-default and seems to be pure kernel-specific, not
distribution release specific, I decided to open for 13.2 to give a potential
bugfix a chance for 13.2. Please transfer to 13.1 if inappropriate.