From owner-freebsd-questions@FreeBSD.ORG Tue Nov 17 20:48:27 2009 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id EE169106566B for ; Tue, 17 Nov 2009 20:48:27 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from asmtpout022.mac.com (asmtpout022.mac.com [17.148.16.97]) by mx1.freebsd.org (Postfix) with ESMTP id D92648FC17 for ; Tue, 17 Nov 2009 20:48:27 +0000 (UTC) MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Received: from cswiger1.apple.com ([17.227.140.124]) by asmtp022.mac.com (Sun Java(tm) System Messaging Server 6.3-8.01 (built Dec 16 2008; 32bit)) with ESMTPSA id <0KT900M9CTS6DB50@asmtp022.mac.com> for freebsd-questions@freebsd.org; Tue, 17 Nov 2009 12:48:07 -0800 (PST) Message-id: From: Chuck Swiger To: Polytropon In-reply-to: <20091117212810.70a99d48.freebsd@edvax.de> Date: Tue, 17 Nov 2009 12:48:06 -0800 References: <151588.70409.qm@web30808.mail.mud.yahoo.com> <20091117194218.GA32781@slackbox.xs4all.nl> <549041.44342.qm@web30807.mail.mud.yahoo.com> <20091117212810.70a99d48.freebsd@edvax.de> X-Mailer: Apple Mail (2.936) Cc: =?ISO-8859-1?Q?D=E1nielisz_L=E1szl=F3?= , FreeBSD - Subject: Re: hdd voltage X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 Nov 2009 20:48:28 -0000 Hi-- On Nov 17, 2009, at 12:28 PM, Polytropon wrote: > V12N : +0.97 <----- Reference -12.0 Volt > V50N : +1.99 <----- Seems to be reference -5.0 Volt, but looks > strange > > As you can see in relation to your output, your board seems > to put other values on the "default" named output lines, e. g. > V12N = +1.46 V which can't be right, but "V12N" seems to be > some chosen name for one of the data output lines, nothing > more; it could be called "Bob", too. :-) V12N is pin 14 of the 20-pin ATX connector, and is supposed to be the blue wire, running at -12 VDC. It was used by ISA cards and an optional part of PCI bus interface, but is not normally used by anything. V50N is / was pin 20 of the ATX connector, running at -5 VDC, but has been removed since ~2003; the -5V rail was used ISA cards, but is now obsolete, and pin 20 is prohibited from being present in modern PSUs. Regards, -- -Chuck