What AC power adapter will plug right into this?

The recommended external power source for this board is a Li-Po Single Cell, 3.7V, 700mAh Minimum

What are the 3 connectors on the board? What wire do I need in order to program this thing?

The MKR 1010 is programmed using the mini usb port. The jst connector is for li-po battery external power & the 5 pin connector is for I2C access. Hope this helps.

What is the proper connector to power this thing with a battery?

The connector on the side you would plug a battery into is a JST-PH style connector.

Without eeprom, how to store the program (sketch)? after a power off and restart, data on ram is lost.

The sketch will persist between reboots, but any volatile data in the RAM will be lost unless you include the EEPROM emulator package. The emulator will write to the EEPROM in which the program is stored at the cost of device life. The process significantly reduces the number of times you can write a new program to the Arduino.

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Description

🚀 Power your IoT dreams with the Arduino MKR WiFi 1010 — connect smarter, build faster!

COMPACT LIGHTWEIGHT - Slim 7x5x2 cm design weighing just 18g fits perfectly in any project setup.
POWER SMART PERFORMANCE - ARM Cortex-M0+ processor ensures high efficiency with minimal battery drain.
SEAMLESS IO T INTEGRATION - Effortlessly prototype WiFi-based IoT projects with built-in WiFi and BLE connectivity.
FUTURE READY CONNECTIVITY - Supports 802.11b WiFi standard for reliable wireless communication.
PLUG PLAY COMPATIBILITY - Easily connect and configure with other Arduino products for rapid development.

The Arduino ABX00023 MKR WiFi 1010 is a compact, lightweight development board featuring an ARM Cortex-M0+ 32-bit processor, integrated WiFi and BLE connectivity, and optimized low power consumption. Designed for seamless prototyping of IoT and pico-network applications, it offers easy compatibility with other Arduino products, making it the ideal entry point for professional-grade wireless projects.

Specifications

Brand	Arduino
Manufacturer	Arduino S.r.l.
Country of Origin	Italy
Model number	ABX00023
Colour	Multi
Number of Memory Sticks	1
Item Weight	18 g
Product Dimensions	7 x 5 x 2 cm; 18 g
Item model number	ABX00023
Item Height	2 Centimeters
Item Width	5 Centimeters
Auto Focus Included	No
Processor brand	ARM
Processor Type	core_m
Processor Socket Type	BGA
Number of processors	1
Memory Storage Capacity	0.03 GB
Memory Technology	SRAM
Memory clock speed	48 MHz
Graphics Card Interface	Integrated
Wireless Standard	802.11b
Number of Ports/Connectors	1
Number of USB Ports	1
Connectivity Technology	Wi-Fi
Compatible Processors	Microchip SAMD21, SAMD21G, SAMD21J, etc.
Included Components	1 x Original MKR
Are batteries included?	No
Hardware Interface Type	USB
External Certification	Não aplicável

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