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CC: RJ45Minecraft mod for 1.21.1

This mod adds new connection capabilities to your game.

client and servernewest supported 1.21.1UtilityGame Mechanics
Latest version
1.2.0
Minecraft
1.21.1
Java
Java 21+
Loader
NeoForge
Licence
CC0-1.0
Downloads
4.5k
Updated
5 d ago
Available on
Modrinth
Space NodeOur hosting

Host CC: RJ45 servers

One click and CC: RJ45 is installed with the right loader, on hardware built for it.

  • 1.21.1
  • NeoForge
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Screenshots

Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.

Minecraft versions

Every version CC: RJ45 declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1NeoForge21+declared8 Aug 2024

Download

From CC: RJ45’s own host. Nothing is re-hosted here.

1.2.0release9 Jul 2026

ccrj45-1.2.0.jar · 0.1 MB · for 1.21.1

Download latest
326568f8715b…
Older versions3
  • 1.1.06 Jun 20261.21.167 KB502 downloads191f81036a85…Get
  • 1.0.120 Feb 20261.21.164 KB1.2k downloadsd38ee345595f…Get
  • 1.0.020 Feb 20261.21.164 KB17 downloads85ea72777472…Get

Frequently asked

Does CC: RJ45 work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version CC: RJ45 declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Do I need to install CC: RJ45 on the client or the server?

Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.

Which platform or loader does CC: RJ45 support?

NeoForge. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for CC: RJ45?

On the newest Minecraft version it supports, Java 21 or newer. The requirement comes from the Minecraft version you run rather than from the mod itself, so on an older supported Minecraft the answer is that version's Java, not this one.

What licence is CC: RJ45 under?

CC0-1.0, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install CC: RJ45?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download CC: RJ45 safely?

Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. The download link goes to the source recorded for that release; verify the publisher, filename and checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

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Details from Modrinth, where the author last updated it on 1 Oct 2026. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .