The Ethernet printers compatible with Square Point of Sale are thermal printers. They require heat-sensitive paper and won’t work with non-thermal receipt paper. These types of printers aren’t ideal for kitchens or high-temperature working areas. 
EOM-POS Thermal Receipt Printer- USB, Ethernet, Serial Ports- Auto Cut – Cash Drawer Port (RJ11/RJ12)- Paper Width 3 1/8″ (80mm) – NOT COMPATIBLE with Mac, Square, Shopkeep, Clover, Shopify, or Paypal
Like I said the only issue im having which is not the printers fault is me utilizing the ESC/POS commands but I was having that issue with my other printer simply because I don’t program in C# and VB.Net(ALTHOUGH IT HAS SOME SAMPLES FOR VB6 FOR THOSE WHO STILL USE VB6!!)
Fonts Included: Number of Columns: 80.00 mm Font A: 48, Font B: 64, Font C 72 58.00 mm Font A: 35, Font B: 46, Font C 52 Character Size (W x H) Font A: 1.50 x 3.00 mm, Font B: 1.13 x 2.13 mm, Font C: 1.00 x 2.00 mm
Be sure the printer and the iPad are connected to the same network. To confirm this or change your Wi-Fi network, go to the iPad’s Settings and tap “Wi-Fi” located in the left sidebar. Then select the network that the router is broadcasting and click “Connect”.
1 x 58mm Paper Roll. Printer Character: GB one/two Chinese character 24 24 dots, Support Taiwan,Hong kong traditional. Interface: USB Port. 1 x Thermal Printer. Support cash drawer driver. Print Speed…
Thermal Head : Thermal head has been cleaned and tested for quality. Self test 1,2 and a connectivity test prints(See pictures for references) were used to confirm quality. If a printer fails thermal …
Square Point of Sale on an iPad is compatible with a wide variety of third-party hardware accessories. Below, you’ll find a list of supported accessories, where to purchase them, and information on getting set up.
It supports 58mm width thermal paper printing, with high printing speed, clear printing & low noise. You can connect your devices with the printer via BT 4.0 & 3.0, USB cable or serial port line. Prin…
Square Register Barcode Scanner – Square Register Socket 7CI Bluetooth Cordless Hand Scanner (CHS), Socket Mobile CHS 7CI Cordless Barcode Scanner, 1D Imager, Includes Socket CHS 7CI Barcode Scanner, Two AAA NiMH Rechargeable Batteries, USB AC Charging Kit, Lanyard/Belt Clip with Retractable Tether, Dark Gray Color – CX2870-1409
Thermal Printer Features: 100% brand new and high quality Suitable for all types of commercial retail POS systems Light in weight and smart in shape High-quality printing and low cost Low noise and h…
Receipt printer information by POSGuys.com. We do a receipt printer speed comparison and demonstrate the differences between impact receipt printers and thermal receipt printers. Our buyers guide http://www.posguys.com/buyersguide/Bu… gives more information.
If you accept credit card payments from your customers at your place of business, you’ll want a receipt printer. A receipt printer automatically prints a receipt for your customer when they make a purchase.
Buy Used and Save: Buy a Used “Star TSP100 TSP143U , USB, Receipt Printer – Not e…” and save 48% off the $279.99 list price. Buy with confidence as the condition of this item and its timely delivery are guaranteed under the “Amazon A-to-z Guarantee”. See all Used offers.
It is a simple process all I can think is that square gets a percentage of royalties from their supported printer sales and thats why they are locking everything down to these ridiculously overpriced pieces of equipment. 
Thermal Receipt Printer, PoweredUSB and USB Interfaces, Auto-cutter. No power supply. Order cables separately. Color: Dark gray. (Dual interface printers require modifications to the printer to use the standard USB interface. The standard USB port will not work unless you use power supply and reconfigure printer by removing the PoweredUSB card). Please Call for more information.
Receipt printer worked wonderfully with my Square checkout terminal and drawer that I also ordered off Amazon. I love that it’s thermal so you don’t have to purchase ink. It was easy to load the paper and easy to unload. All the items you need for the printer are here on Amazon so I could have it delivered directly to my workplace.
More websites are here.

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USB Mini 58mm POS/ESC Thermal Dot Receipt Printer Set 384 Line. Fast printing up to 90mm for both text & graphics. Support store logo download and print (bmp file). Support bar code print. Drop-in pap…
1 x 58mm Paper Roll. Printer Character: GB one/two Chinese character 24 24 dots, Support Taiwan,Hong kong traditional. Interface: USB Port. Extend Character 1 x Thermal Printer. Print Speed: 90mm/sec.
I am still trying my best to use it. My POS system doesn’t support Star. and now I am having the common problem that I am dealing with Star tech support, they are still working on it to solve the problem, which is it doesn’t print out All Receipts bar-codes on my machine even from their own configuration utility, can’t use Receipt Flip, it doesn’t cut off the receipt automatically, doesn’t print out my full store name in every other receipt, and sometimes the receipt goes out 2 feet long.