德国Guntermann & Drunck GmbH（简称G&D）成立于1985年，在1994年开发出第一台模块化矩阵交换机，现已成为数字和模拟KVM（Keyboard Video Mouse）解决方案的领先制造商，提供KVM系统软件、KVM虚拟化网络平台搭建、KVM矩阵切换器、扩展器、交换机、主机、服务器、共享器、线等全套设备。Guntermann＆Drunck的KVM解决方案可优化IT应用，例如在电信、金融、数字标牌、控制站或控制室、工业生产和自动化、广播工程、空中交通管制（ATC）部门中的IT应用，可满足在一台工作站上操作几百台计算机，或者扩展10000米的距离内的计算机访问权限。

G&D扩展器系统型号：

A1110013	CATVision-ARD-CPU	A1800001	CV-Power-CPU	A1210011	CATVision-MC2-ARD-CPU	A1220032	Twin-CATVision-MC2-R-CON
A1110014	CATVision-ARD-CPU-RM	A1120003	CATVision-CON	A1210080	CATVision-MC2-U2-CPU	A1220033	Twin-CATVision-MC2-AR-CON
A1110120	CATVision-U2-CPU	A1120004	CATVision-CON-RM	A1210081	CATVision-MC2-U2D-CPU	A1410001	CATVision-MC4-CPU
A1110123	CATVision-U2-CPU-RM	A1120005	CATVision-R-CON	A1210082	CATVision-MC2-ARU2-CPU	A1410003	CATVision-MC4-D-CPU
A1110121	CATVision-U2D-CPU	A1120006	CATVision-R-CON-RM	A1210083	CATVision-MC2-ARU2D-CPU	A1410005	CATVision-MC4-R-CPU
A1110124	CATVision-U2D-CPU-RM	A1120007	CATVision-AR-CON	A1210025	Twin-CATVision-MC2-CPU	A1410007	CATVision-MC4-RD-CPU
A1110119	CATVision-ARU2-CPU	A1120008	CATVision-AR-CON-RM	A1210026	Twin-CATVision-MC2-D-CPU	A1410009	CATVision-MC4-AR-CPU
A1110125	CATVision-ARU2-CPU-RM	A1120121	CATVision-U2-CON	A1210027	Twin-CATVision-MC2-R-CPU	A1410011	CATVision-MC4-ARD-CPU
A1110122	CATVision-ARU2D-CPU	A1120122	CATVision-U2-CON-RM	A1210028	Twin-CATVision-MC2-RD-CPU	A1410029	CATVision-MC4-U2-CPU
A1110126	CATVision-ARU2D-CPU-RM	A1120120	CATVision-ARU2-CON	A1210029	Twin-CATVision-MC2-AR-CPU	A1410030	CATVision-MC4-U2D-CPU
A1110027	Twin-CATVision-CPU	A1120123	CATVision-ARU2-CON-RM	A1210030	Twin-CATVision-MC2-ARD-CPU	A1410031	CATVision-MC4-ARU2-CPU
A1110028	Twin-CATVision-D-CPU	A1120043	Twin-CATVision-CON	A1220001	CATVision-MC2-CON	A1410032	CATVision-MC4-ARU2D-CPU
A1110029	Twin-CATVision-R-CPU	A1120044	Twin-CATVision-R-CON	A1220002	CATVision-MC2-CON-RM	A1420001	CATVision-MC4-CON
A1110030	Twin-CATVision-RD-CPU	A1120045	Twin-CATVision-AR-CON	A1220003	CATVision-MC2-R-CON	A1420003	CATVision-MC4-R-CON
A1110031	Twin-CATVision-AR-CPU	A1800002	CV-Power-CON	A1220004	CATVision-MC2-R-CON-RM	A1420005	CATVision-MC4-AR-CON
A1110032	Twin-CATVision-ARD-CPU	A1210001	CATVision-MC2-CPU	A1220005	CATVision-MC2-AR-CON	A1420021	CATVision-MC4-U2-CON
A1110136	Twin-CATVision-U2-CPU	A1210003	CATVision-MC2-D-CPU	A1220006	CATVision-MC2-AR-CON-RM	A1420022	CATVision-MC4-ARU2-CON
A1110137	Twin-CATVision-U2D-CPU	A1210005	CATVision-MC2-R-CPU	A1220062	CATVision-MC2-U2-CON	A1220031	Twin-CATVision-MC2-CON
A1110138	Twin-CATVision-ARU2-CPU	A1210007	CATVision-MC2-RD-CPU	A1220063	CATVision-MC2-ARU2-CON	A1210009	CATVision-MC2-AR-CPU
A1110139	Twin-CATVision-ARU2D-CPU	A1110151	LwLVision(M)-ARU2-PC-RM	A1120145	LwLVision(M)-ARU2-Rem-RM