<informationTable xmlns="http://www.sec.gov/edgar/document/thirteenf/informationtable">		<infoTable>
			<nameOfIssuer>Arris Group Inc New</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>04270V106</cusip>
			<value>296636</value>
			<shrsOrPrnAmt>
				<sshPrnamt>9703500</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>DFND</investmentDiscretion>
			<otherManager>3</otherManager>
			<votingAuthority>
				<Sole>0</Sole>
				<Shared>9703500</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>Fitbit Inc.</nameOfIssuer>
			<titleOfClass>CL A</titleOfClass>
			<cusip>33812L102</cusip>
			<value>1535</value>
			<shrsOrPrnAmt>
				<sshPrnamt>51886</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>DFND</investmentDiscretion>
			<otherManager>1</otherManager>
			<votingAuthority>
				<Sole>0</Sole>
				<Shared>51886</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>LendingClub Corp</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>52603A109</cusip>
			<value>517</value>
			<shrsOrPrnAmt>
				<sshPrnamt>46832</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>DFND</investmentDiscretion>
			<otherManager>2</otherManager>
			<votingAuthority>
				<Sole>0</Sole>
				<Shared>46832</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>On Deck Cap Inc</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>682163100</cusip>
			<value>24287</value>
			<shrsOrPrnAmt>
				<sshPrnamt>2357968</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>DFND</investmentDiscretion>
			<otherManager>1</otherManager>
			<votingAuthority>
				<Sole>0</Sole>
				<Shared>2357968</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>On Deck Cap Inc</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>682163100</cusip>
			<value>3357</value>
			<shrsOrPrnAmt>
				<sshPrnamt>325885</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>SOLE</investmentDiscretion>
			<votingAuthority>
				<Sole>325885</Sole>
				<Shared>0</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
		<infoTable>
			<nameOfIssuer>Twitter Inc</nameOfIssuer>
			<titleOfClass>COM</titleOfClass>
			<cusip>90184L102</cusip>
			<value>469</value>
			<shrsOrPrnAmt>
				<sshPrnamt>20274</sshPrnamt>
				<sshPrnamtType>SH</sshPrnamtType>
			</shrsOrPrnAmt>
			<investmentDiscretion>DFND</investmentDiscretion>
			<otherManager>1</otherManager>
			<votingAuthority>
				<Sole>0</Sole>
				<Shared>20274</Shared>
				<None>0</None>
			</votingAuthority>
		</infoTable>
</informationTable>
