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Description
HKD ETHERNET SHIELD W5100 R3Arduino Compatible Ethernet Shield, with Wiznet W5100 R3 Network for UNO and Mega 2560 with Micro SD Card Slot. Arduino Compatible Ethernet Shield Features This ethernet shield is based on the Wiznet W5100 ethernet chip providing a network (IP) stack capable of both TCP and UDP. (R3 exposes extra pins such as SCL, SDA, IOREF for newer versions of Arduino boards) The arduino ethernet shield supports up to four simultaneous socket connections. Use the
Arduino Compatible Ethernet Shield, with Wiznet W5100 R3 Network for UNO and Mega 2560 with Micro-SD Card Slot.
Arduino Compatible Ethernet Shield
Features
- This ethernet shield is based on the Wiznet W5100 ethernet chip providing a network (IP) stack capable of both TCP and UDP. (R3 exposes extra pins such as SCL, SDA, IOREF for newer versions of Arduino boards)
- The arduino ethernet shield supports up to four simultaneous socket connections.
- Use the ethernet library to write sketches which connect to the internet via a standard RJ45 ethernet jack using the shield.
- The latest revision of the shield adds a micro-sd card slot, which can be used to store files for serving over the network.
- It is compatible with the uno and mega (using the ethernet library).
- You can access the on-board sd card slot using the sd library which is included in the current build.
- The latest revision of the shield also includes a reset controller, to ensure that the w5100 ethernet module is properly reset on power-up.
- Previous revisions of the shield were not compatible with the mega and need to be manually reset after power-up.
- The reset button on the shield resets both the W5100.
Additional Information
| Device | Ethernet Shield |
| Type | Arduino Compatible |
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4.0 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 4
Order 1 size larger.
Size: X-Large, Color: Blue White Plaid
Nice shirt. The size is not accurate by any stretch of the imagination. I wear size xl in shirts except for this one. An xl fits like a large. Other than that I like the shirt. I would've given it 5 stars if not for the sizing. I'll give away this one and order an xxl. Just order a size above what you wear and you'll be happy.
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Reviewed in the United States on February 15, 2026
★★★★★ 5
Nice fit
Size: X-Large, Color: Grey
Great value for the money. Would buy again.
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Reviewed in the United States on April 30, 2026
★★★★★ 5
Satisfied with color and fit
Size: Small, Color: Light Purple
For the money, this is a good shirt. True, the material is a bit thin and there is a feeling of 'fragility' (loose threads here and there) but the color is nice, the texture is appropriate.
The sizing is what I call "New American". I was a medium my whole life but supersizing has made me into a small. I haven't changed, Americans have grown bigger.
I am six feet tall and a bit (180+ cm) and weigh 155 pounds (70kg and a bit).
The small fits me just fine everywhere but the shoulders are just barely wide enough.
If you have slightly wider shoulders but are similar to me otherwise, this may be too tight for you in that one place.
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Reviewed in the United States on May 13, 2025
★★★★★ 3
Fits too tight at waist.
Size: XX-Large, Color: Wine
Quality of product satisfactory, however size labeling incorrect. I ordered a XXL that is too tight at the waist. It should be labeled XXL Trim.
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Reviewed in the United States on May 28, 2026
★★★★★ 5
Men’s Oxford Shirt
Size: Large, Color: Green
Very nice looking shirt. It’s comfortable and classy.
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Reviewed in the United States on April 9, 2026