---
title: "W5500 buffer size for one socket"
url: "https://maker.wiznet.io/forum/10694"
markdown_url: "https://maker.wiznet.io/forum/10694/md"
type: "Forum topic"
category: "Ethernet Chips"
author: "MrBool"
created: "2014-11-25T12:58:20+09:00"
last_activity: "2017-05-04T08:34:26+09:00"
language: "en"
views: 1987
replies: 1
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# W5500 buffer size for one socket

## Question

Asked by MrBool on 2014-11-25 in Ethernet Chips.

W5500 has internal 32kB Memory for TX/RX Buffers. If I use only one socket can I set TX buffer to 16kB and RX buffer to 16kB?

## Replies

### Reply 1 by alexpescaru, 2014-11-25

Yes.
Any combination, with the sole restriction that a certain buffer size must be a power of 2 (1,2,4,8,16,32).
And, of course, the sum of all buffers sizes must be less or equal to 32.

---

Source: https://maker.wiznet.io/forum/10694