---
title: "UM-64 64K RAM Pack"
id: 11641
type: "product"
slug: "64k-ram-pack-8"
url: "http://localhost/product/64k-ram-pack-8/"
markdown_url: "http://localhost/product/64k-ram-pack-8.md"
published_at: "2019-11-30T01:21:50+00:00"
modified_at: "2026-03-22T13:20:13+00:00"
author: "David Anderson"
featured_image:
  url: "http://localhost/wp-content/uploads/2019/11/20230903-063925.webp"
excerpt: "64K RAM pack with additional features. 8-16K area selectable in 2K increments.EPROM socket for 2K/4K.Battery backup (6 AA batteries) powers RAM pack and computer for up to 30 minutes.ROM-RAM transfer: copy Timex ROM into the 0-8K area of RAM, flip a switch and operate out of RAM.Switch that only resets 16-32K area."
category:
  - name: "RAM"
    slug: "ram"
    taxonomy: "category"
    url: "http://localhost/category/hardware/ram/"
post_tag:
  - name: "Byte-Back Co"
    slug: "byte-back-co"
    taxonomy: "post_tag"
    url: "http://localhost/tag/byte-back-co/"
  - name: "TS 1000"
    slug: "ts1000"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ts1000/"
model:
  - name: "Timex/Sinclair 1000"
    slug: "ts-1000"
    taxonomy: "model"
    url: "http://localhost/model/ts-1000/"
genre:
  - name: "Hardware"
    slug: "hardware"
    taxonomy: "genre"
    url: "http://localhost/type/hardware/"
  - name: "RAM"
    slug: "ram"
    taxonomy: "genre"
    url: "http://localhost/type/ram/"
company:
  id: 10711
  title: "Byte-Back Co"
  type: "company"
  url: "http://localhost/company/byte-back-co/"
model_2: "UM-64"
price: 129.95
rarity: "Uncommon"
related_content:
  - id: 35658
    title: "UM-64 Memory Manual"
    type: "document"
    url: "http://localhost/document/um-64-memory-manual/"
adverts:
  - publication:
      - id: 26650
        title: "SYNC v3 n4"
        type: "issue"
        url: "http://localhost/issue/sync-v3-n4/"
    advert_page: "96"
companies_products:
  - id: 10711
    title: "Byte-Back Co"
    type: "company"
    url: "http://localhost/company/byte-back-co/"
---

# UM-64 64K RAM Pack

64K RAM pack with additional features.

- 8-16K area selectable in 2K increments.
- EPROM socket for 2K/4K.
- Battery backup (6 AA batteries) powers RAM pack and computer for up to 30 minutes.
- ROM-RAM transfer: copy Timex ROM into the 0-8K area of RAM, flip a switch and operate out of RAM.
- Switch that only resets 16-32K area.

![Image](http://localhost/wp-content/uploads/2020/09/Byte-Back-UM-64-memory-and-manual.jpg)