Picture would be nice, or at least a description of the location.

cdr.pl

Which model SXT-R is that SiB? I don't have the tall bits around the edge on mine.
Do you know what band they are for?

Options to buy:

• SXT R <- WITHOUT LTE modem, empty mPCIe
• SXT 4G Kit = RB SXTR + R11e-4G
• SXT LTE Kit = RB SXTR + R11e-LTE
• SXT LTE Kit-US = RB SXTR + R11e-LTE-US
• SXT LTE6 Kit = RB SXTR + R11e-LTE6

they have

• 2x Ethernet
• 2x SIM Slot
• no speaker/buzzer
• mPCIe slot and you can change/add own lte module

AND it's one more, the first one... Discontinued

• SXT LTE = RB SXTLTE3-7

who

• no slot for lte modem, LTE SoC is soldered to PCB
• speaker <- you can play Mario at roof :)
• 1x SIM Slot
• 1x Ethernet port

About band, you need to check with which LTE interface comes the model that you pick. There are 4 modules possible:

R11e-LTE: 1 (2100MHz) / 2 (1900MHz) / 3 (1800MHz) / 7 (2600MHz) / 8 (900 MHz) / 20 (800MHz) / 38 (2600MHz) / 40 (2300MHz)
R11e-LTE-US: 2 (1900MHz) / 4 (1700MHz) / 5 (850MHz) / 12 (700MHz)
R11e-LTE6:1 (2100MHz) / 2 (1900MHz) / 3 (1800MHz) / 7 (2600MHz) / 8 (900 MHz) / 20 (800MHz) / 5 (850MHz) / 12 (700MHz) / 17 (700MHz) / 25 (1900MHz) / 26 (850MHz) / 38 (2600MHz) / 40 (2300MHz) / 39 (1900MHz) / 41n (2500MHz)
R11e-4G: 3 (1800MHz) / 7 (2600MHz) / 20 (800MHz) / 31 (450MHz) / 41n (2500MHz) / 42 (3500MHz) / 43 (3700MHz)

Regards.