---
title: "RGB Monitor Cable"
type: "article"
slug: "rgb-monitor-cable"
url: "http://localhost/article/rgb-monitor-cable/"
markdown_url: "http://localhost/article/rgb-monitor-cable.md"
published_at: "2026-01-21T14:55:15+00:00"
modified_at: "2026-01-21T14:55:17+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "There has been renewed interest in the \"Skip Fisher\" adapter/buffer cable for the QL RGB monitor output. As many know, the OL is vulnerable to damaging external voltages thru its RGB circuits which are not internally buffered."
category:
  - name: "CATS Newsletter"
    slug: "cats-newsletter"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/cats-newsletter/"
post_tag:
  - name: "Hardware project"
    slug: "hardware-project"
    taxonomy: "post_tag"
    url: "http://localhost/tag/hardware-project/"
  - name: "QL"
    slug: "ql"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ql/"
model:
  - name: "Sinclair QL"
    slug: "sinclair-ql"
    taxonomy: "model"
    url: "http://localhost/model/sinclair-ql/"
indiv:
  - name: "LeBaron Washington"
    slug: "lebaron-washington"
    taxonomy: "indiv"
    url: "http://localhost/indiv/lebaron-washington/"
publication_r:
  id: 35941
  title: "CATS Newsletter"
  type: "periodical"
  url: "http://localhost/periodical/cats-newsletter/"
authors_r:
  - name: "LeBaron Washington"
    slug: "lebaron-washington"
    taxonomy: "indiv"
    url: "http://localhost/indiv/lebaron-washington/"
volume: "8"
issue: "11"
issues_articles:
  - id: 38925
    title: "CATS v8 n11"
    type: "issue"
    url: "http://localhost/issue/cats-v8-n11/"
pages: "7-8"
pubdate: "April 1991"
archive_link: false
---

# RGB Monitor Cable

There has been renewed interest in the “Skip Fisher” adapter/buffer cable for the QL RGB monitor output. As many know, the OL is vulnerable to damaging external voltages thru its RGB circuits which are not internally buffered.